Perhaps you should try some spelling variations:
va triet » va thiet, va trien, ve triet
ban hanh » ban hang
nam xua » nam cua, nam mua, nam qua
nam xuc » cam xuc, nam thuc, nam duoc
hieu va » lieu va, hieu qua
su sach » so sach
nang xa » nang x, lang xa, nang ma
tu nang » tru nang, tu nong, tu nano
vu sach » vu bach, vu khach
vi va » vi van, vai va, vu va

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((su sach) OR (vu sach)) tu nang xa hoi. hieu va ((nam xuc) or (nam xua)) ban hanh vi va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (vu sach)) tu nang xa hoi. hieu va ((nam xuc) OR (nam xua)) ban hanh vi va triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) OR (vu sach)) tu nang xa hoi. hieu va ((nam xuc) or (nam xua)) ban hanh vi va triet*".