Perhaps you should try some spelling variations:
pham chuc » pham duc, pham huu, kham chua
hanh dai » hanh tai, hanh dao, vanh dai
van hanh » van thanh, ban hanh, van anh
chuc van » chu van, chuc va, thuc van
so sach » bo sach, co sach, hoc sach
ve pham » vi pham, v pham, ve phan
hieu ve » hieu va, hieu van
tang ma » mang may, tang van
nang ma » sang ma, nang cao, mang may
so sanh » do sanh
cua tuc » cua duc, cua tu, cua thuoc

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: ((so sach) OR (so sanh)) thu ((nang ma) OR (tang ma)) hoi. hieu ve pham chuc van hanh dai cua tuc~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((so sach) or (so sanh)) thu ((nang ma) OR (tang ma)) hoi. hieu ve pham chuc van hanh dai cua tuc~".
• Adding a wildcard symbol may retrieve word variants: ((so sach) or (so sanh)) thu ((nang ma) OR (tang ma)) hoi. hieu ve pham chuc van hanh dai cua tuc*.