>>>How this query will work fast. It has 37000 records, and takes .28 time to load.
>>>

>>> thisform.container6.searche.RecordSourceType=4  &&grid
>>> 
>>>     thisform.container6.searche.RecordSource = "select word,ur from dict "+;
>>>                " where UPPER(word) = Upper(Trim(thisform.container6.texte.Value))"+;
>>>                " order by word into cursor SYS(2015)  "
>>>

>>
>>It may be a better idea to use the cursor for the recordSource.
>>

>>select word,ur from dict  where UPPER(word) = Upper(Trim(thisform.container6.texte.Value)) ;
>> order by word into cursor crsGrid nofilter

>>
>>Also your table should have an index on UPPER(word) so the query will be Rushmore optimizable.
>no change in time

You can also change the query to use local variable rather than thisform property, e.g.

lcValue = Upper(Trim(thisform.container6.texte.Value))
select word,ur from dict  where UPPER(word) = m.lcValue ;
 order by word into cursor crsGrid nofilter

There is nothing much you can do in addition to speed up this simple query.