Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
cac thuc » cach thuc, can thuc, cay thuc
so sanh » do sanh
sanh ky » hanh ky, sang ky, nganh ky
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
cac thu » cach thuc, cac thoi
vi cua » vai cua
di cua » dai cua, doi cua, de cua

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 xa hoi. hieu ve ((cac thuc) OR (cac thu)) ban thanh ((vi cua) or (di cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sanh ky nang xa hoi. hieu ve ((cac thuc) OR (cac thu)) ban thanh ((vi cua) OR (di cua)) tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sanh ky nang xa hoi. hieu ve ((cac thuc) OR (cac thu)) ban thanh ((vi cua) or (di cua)) tre".
• Adding a wildcard symbol may retrieve word variants: so sanh ky nang xa hoi. hieu ve ((cac thuc) OR (cac thu)) ban thanh ((vi cua) or (di cua)) tre*.