Perhaps you should try some spelling variations:
hoc sach » hoc sinh, hoc cac, hoc anh
hanh lam » thanh lap, hanh kem, hanh va
cau treo » cau theo, cau tren, cau triet
sang xa » song xa, lang xa, sang ma
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
sach tu » sach thu, cach tu, sach ty
tu sang » thu sang, tu san, tu lang
cua tre » cua te, cuu tre, cua triet
soc va » loc va, doc va, goc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc sach tu sang xa hoi. hieu ve cham ((soc va) or (hoc va)) hanh lam ((cua tre) or (cau treo))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc sach tu sang xa hoi. hieu ve cham ((soc va) OR (hoc va)) hanh lam ((cua tre) OR (cau treo)).
• Adding a wildcard symbol may retrieve word variants: hoc sach tu sang xa hoi. hieu ve cham ((soc va) or (hoc va)) hanh lam ((cua tre) or (cau treo))*.