Perhaps you should try some spelling variations:
pham chuc » pham duc, pham huu, kham chua
thi nang » thi cong, ki nang, thi hanh
hanh lai » hanh lam, hanh tai, thanh lap
tai khoi » tai khoa, mai khoi, tao khoi
sach thi » sach thu, sach tai, sach thieu
lai cua » dai cua, hai cua, lai chau
va hanh » van hanh, va thanh, va danh
chuc va » thuc va, thuc vat
so sach » so sanh, bo sach, co sach
ve pham » vi pham, v pham, ve phan
hieu ve » hieu va, hieu van
dai hoi » dai hoc, dai hai, dai moi
tai hoi » tai hai, tai hoe, tao hoi
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 thi nang ((((tai hoi) OR (dai hoi))) or (tai khoi)). hieu ve pham chuc va hanh lai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach thi nang ((((tai hoi) OR (dai hoi))) OR (tai khoi)). hieu ve pham chuc va hanh lai cua te*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach thi nang ((((tai hoi) OR (dai hoi))) or (tai khoi)). hieu ve pham chuc va hanh lai cua te*".