Perhaps you should try some spelling variations:
phat chuc » pham chuc, phap chuc, phap thuc
hoc sach » hoc sinh, hoc cac
vanh tai » van tai, hanh tai, anh tai
thi nang » thi cong, ki nang, thi hanh
tai cua » thai cua, tai cuc, tri cua
va vanh » va van, va danh, va hanh
chuc va » thuc va, thuc vat
hieu va » lieu va, hieu qua
nang co » nang cao, nang doc, nang noi
so sanh » do sanh
hoc anh » hoc nganh, hoc nhanh, ngoc anh
co hoi » co hoc, co loi
cua te » cua tu

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 (hoc anh))) or (so sanh)) thi nang co hoi. hieu va phat chuc va vanh tai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((hoc sach) OR (hoc anh))) OR (so sanh)) thi nang co hoi. hieu va phat chuc va vanh tai cua te*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((hoc sach) OR (hoc anh))) or (so sanh)) thi nang co hoi. hieu va phat chuc va vanh tai cua te*".