Perhaps you should try some spelling variations:
vat thanh » dat thanh, gat thanh, tat thanh
nam thuc » nam thuoc, am thuc, nam thu
thanh vi » hanh vi, thanh va, thanh ve
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
hieu ve » hieu va, hieu van
va sac » va cac, va suc, va san
sac ky » cac ky, sai ky
ve nam » he nam, va nam, le nam
cua tu » cua tuc, cua cu, cua te
cua su » qua su

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: va sac ky lang xa hoi. hieu ve nam thuc vat thanh vi ((cua tu) or (cua su))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: va sac ky lang xa hoi. hieu ve nam thuc vat thanh vi ((cua tu) OR (cua su)).
• Adding a wildcard symbol may retrieve word variants: va sac ky lang xa hoi. hieu ve nam thuc vat thanh vi ((cua tu) or (cua su))*.