Perhaps you should try some spelling variations:
phat chuc » pham chuc, phap chuc, phap thuc
hoc sach » hoc sinh, hoc cac, hoc anh
vanh tai » van tai, hanh tai, anh tai
thi nang » thi cong, ki nang, thi hanh
qua phat » qua nhat, qua phan, que phat
so sach » bo sach, co sach
chuc va » thuc va, thuc vat
tai cua » thai cua, tai cuc, tri cua
so sanh » do sanh
nang co » nang cao, nang doc, nang noi
va vanh » va van, va danh, va hanh
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: ((((so sach) OR (hoc sach))) or (so sanh)) thi nang co hoi. hieu qua phat chuc va vanh tai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((so sach) OR (hoc sach))) OR (so sanh)) thi nang co hoi. hieu qua phat chuc va vanh tai cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((so sach) OR (hoc sach))) or (so sanh)) thi nang co hoi. hieu qua phat chuc va vanh tai cua te".
• Adding a wildcard symbol may retrieve word variants: ((((so sach) OR (hoc sach))) or (so sanh)) thi nang co hoi. hieu qua phat chuc va vanh tai cua te*.