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