Perhaps you should try some spelling variations:
thanh nien » thanh vien, thanh nhan, thanh liem
ban thanh » ban hanh, ban hang
nien cua » dien cua, tien cua, bien cua
so sanh » do sanh
sanh ky » hanh ky, sang ky, nganh ky
cac tac » cac bac, cac dac, cac tai
cac toc » cac toi, cac nuoc, cac thoi
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 sanh ky nang x ho. hieu qua ((cac tac) OR (cac toc)) ban thanh nien cua te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sanh ky nang x ho. hieu qua ((cac tac) OR (cac toc)) ban thanh nien cua te".
• Adding a wildcard symbol may retrieve word variants: so sanh ky nang x ho. hieu qua ((cac tac) OR (cac toc)) ban thanh nien cua te*.