>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.