Perhaps you should try some spelling variations:
thanh vien » nhan vien
thanh van » thanh san, thanh toan, thanh phan
dieu cua » dieu tra
cac tac » cac toc, cac bac, cac dac
so sach » bo sach, co sach, hoc sach
lang xa » lang ha, dang xay, lang van
ky lang » ky nang, ky dang, ky tang
so sanh » do sanh
cua tre » cua te, cuu tre, cua triet
tac va » tac da, tac xa, tuc va

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)) ky lang xa hoi. dieu cua cac tac va ((thanh van) or (thanh vien)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((so sach) OR (so sanh)) ky lang xa hoi. dieu cua cac tac va ((thanh van) OR (thanh vien)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((so sach) OR (so sanh)) ky lang xa hoi. dieu cua cac tac va ((thanh van) or (thanh vien)) cua tre".
• Adding a wildcard symbol may retrieve word variants: ((so sach) OR (so sanh)) ky lang xa hoi. dieu cua cac tac va ((thanh van) or (thanh vien)) cua tre*.