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