Perhaps you should try some spelling variations:
thanh vi » hanh vi, thanh va, nhanh vi
thanh ve » hanh ve, thanh va, thanh vien
dang xay » dang van, van xay
nam truc » nam truoc, nam thuc, nam trung
cua tre » cua te, cuu tre, cua triet
lang xa » lang ha, lang van
truc va » thuc va, thuc vat, trung va
tu san » thu san, tu ban, tu can
san ky » sang ky, van ky, dan ky
va nam » van nam, ha nam, va nay

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu san ky ((lang xa) or (dang xay)) hoi. lieu va nam truc va ((thanh vi) OR (thanh ve)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu san ky ((lang xa) OR (dang xay)) hoi. lieu va nam truc va ((thanh vi) OR (thanh ve)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu san ky ((lang xa) or (dang xay)) hoi. lieu va nam truc va ((thanh vi) OR (thanh ve)) cua tre".
• Adding a wildcard symbol may retrieve word variants: tu san ky ((lang xa) or (dang xay)) hoi. lieu va nam truc va ((thanh vi) OR (thanh ve)) cua tre*.