Perhaps you should try some spelling variations:
tham nang » nham nang, tham lang, tham nhung
pham chuc » pham duc, pham huu, kham chua
hanh vai » hanh vi, hanh va, hanh tai
so sach » so sanh, co sach, hoc sach
chuc va » thuc va, thuc vat
vai cua » dai cua, hai cua, lai cua
bo sach » co sach, hoc sach
cao hoi » cau hoi, co hoi, cao hoc
hieu ve » hieu van
va hanh » van hanh, va thanh, va danh
hieu va » lieu va, hieu qua
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 (bo sach)) tham nang cao hoi. ((hieu ve) or (hieu va)) pham chuc va hanh vai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((so sach) OR (bo sach)) tham nang cao hoi. ((hieu ve) OR (hieu va)) pham chuc va hanh vai cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((so sach) OR (bo sach)) tham nang cao hoi. ((hieu ve) or (hieu va)) pham chuc va hanh vai cua te".
• Adding a wildcard symbol may retrieve word variants: ((so sach) OR (bo sach)) tham nang cao hoi. ((hieu ve) or (hieu va)) pham chuc va hanh vai cua te*.