Perhaps you should try some spelling variations:
thanh ve » hanh ve, thanh va, thanh vien
cuu thuc » cuu tac
te sach » toc sach
sach ty » sach y, sach tu, sach thu
xang xa » lang xa, mang xa, ang xa
hieu va » lieu va, hieu qua
va tham » van tham, va cham, va thanh
truc va » thuc va, trung va
ve cuu » ve cau, ve chu, ve cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ty xang xa hoi. hieu va tham ((((thuc vat) or (truc va))) or (duc va)) thanh ve cuu thuc~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ty xang xa hoi. hieu va tham ((((thuc vat) OR (truc va))) OR (duc va)) thanh ve cuu thuc.
• Adding a wildcard symbol may retrieve word variants: te sach ty xang xa hoi. hieu va tham ((((thuc vat) or (truc va))) or (duc va)) thanh ve cuu thuc*.