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