Perhaps you should try some spelling variations:
van thiet » va thiet, dan thiet, can thiet
va thanh » gia thanh, ban thanh, va tinh
ban hanh » ban hang
cac xuc » cam xuc, cac nuoc, chat xuc
so cach » so sach, co cach, mot cach
hieu ve » hieu va, hieu van
nang xa » nang x, lang xa, nang ma
tu nang » tru nang, tu nong, tu nano
ve cac » va cac, vien cac

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((so cach) OR (loi cach)) tu nang xa hoi. hieu ve cac xuc ((ban hanh) or (va thanh)) vi van thiet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((so cach) OR (loi cach)) tu nang xa hoi. hieu ve cac xuc ((ban hanh) OR (va thanh)) vi van thiet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((so cach) OR (loi cach)) tu nang xa hoi. hieu ve cac xuc ((ban hanh) or (va thanh)) vi van thiet".
• Adding a wildcard symbol may retrieve word variants: ((so cach) OR (loi cach)) tu nang xa hoi. hieu ve cac xuc ((ban hanh) or (va thanh)) vi van thiet*.