Perhaps you should try some spelling variations:
hanh lai » hanh lam, hanh tai, thanh lap
te sach » toc sach
sach ky » sac ky, sach y, sach ty
lai cuu » lai cua, lai chau, lai cuoc
truc va » thuc va, thuc vat, trung va
cuu tre » cua tre, cau tren, cau treo
hieu ve » hieu va, hieu van
ky dang » ky nang, ky danh
ma hoi » mai hoi, ma hoa, me hoi
ve cam » ve cham, ve cac, va cam

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 ky dang ((ma hoi) OR (xa hoi)). hieu ve cam ((duc va) or (truc va)) hanh lai cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky dang ((ma hoi) OR (xa hoi)). hieu ve cam ((duc va) OR (truc va)) hanh lai cuu tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky dang ((ma hoi) OR (xa hoi)). hieu ve cam ((duc va) or (truc va)) hanh lai cuu tre*".