Perhaps you should try some spelling variations:
va triet » va thiet, va trien, ve triet
ban hang » ngan hang
hieu van » hieu va, thien van, lieu va
va thanh » gia thanh, ban thanh, va tinh
sach ty » sach y, sach tu, sach thu
vu sach » vu bach, su sach, vu khach
hac xuc » chat xuc
van hac » van hoc, van ha, van hai
nang xa » nang x, lang xa, nang ma
ty nang » ky nang, ty xang, ty hang
va hanh » van hanh, va danh, ban hanh
di va » dai va, di vao, doi va

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach ty nang xa hoi. hieu van hac xuc ((va hanh) or (((va thanh) or (ban hang)))) di va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ty nang xa hoi. hieu van hac xuc ((va hanh) OR (((va thanh) OR (ban hang)))) di va triet.
• Adding a wildcard symbol may retrieve word variants: vu sach ty nang xa hoi. hieu van hac xuc ((va hanh) or (((va thanh) or (ban hang)))) di va triet*.