Perhaps you should try some spelling variations:
phat chuc » pham chuc, phap chuc, phap thuc
vanh dai » van dai, vanh tai, lanh dao
hoc sach » hoc sinh, hoc cac, hoc anh
thi cong » tai cong, thien cong
so sach » bo sach, co sach
ve phat » va phat, te phat, de phat
va vanh » va van, va danh, va hanh
chuc va » thuc va, thuc vat
cong co » dong co, cong cu, cong so
hieu ve » hieu va, hieu van
so sanh » do sanh
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 cong co hoc. hieu ve phat chuc va vanh dai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((so sach) OR (hoc sach))) OR (so sanh)) thi cong co hoc. hieu ve phat chuc va vanh dai cua te.
• Adding a wildcard symbol may retrieve word variants: ((((so sach) or (hoc sach))) or (so sanh)) thi cong co hoc. hieu ve phat chuc va vanh dai cua te*.