Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
van hanh » ban hanh, van anh, van ban
so sanh » do sanh
sanh ky » hanh ky, sang ky, nganh ky
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
cao suc » cao su, cao duc
va cao » va cac, va co, va dao
va cua » va chua, via cua, ca cua
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 xa hoi. hieu va cao suc ((van hanh) OR (van thanh)) va cua te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sanh ky nang xa hoi. hieu va cao suc ((van hanh) OR (van thanh)) va cua te".
• Adding a wildcard symbol may retrieve word variants: so sanh ky nang xa hoi. hieu va cao suc ((van hanh) OR (van thanh)) va cua te*.