Perhaps you should try some spelling variations:
hoc sach » hoc sinh, hoc cac, hoc anh
van pham » san pham, van phan, van phat
thi nang » thi cong, ki nang, thi hanh
nang co » nang cao, nang doc, nang noi
so sanh » do sanh
chuc va » thuc va, thuc vat
van tai » von tai, van tuan
tai cua » thai cua, tai cuc, tri cua
co hoi » co hoc, co loi
cua tu » cua tuc, cua su, cua cu

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) or (so sanh)) thi nang co hoi. hieu ((van pham) or (va phat)) chuc va van tai cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc sach) OR (so sanh)) thi nang co hoi. hieu ((van pham) OR (va phat)) chuc va van tai cua tu.
• Adding a wildcard symbol may retrieve word variants: ((hoc sach) or (so sanh)) thi nang co hoi. hieu ((van pham) or (va phat)) chuc va van tai cua tu*.