Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
hac thuc » hoc thuc, ha thuc, thach thuc
vu sach » vu bach, su sach, vu khach
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
va tinh » may tinh
cua tre » cua te, cuu tre, cua triet
y nang » ky nang, ly nang, v nang
va hac » van hac, va khac, va cac
vi cua » vai cua, di cua

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 y nang xa hoi. hieu va hac thuc ((((gia thanh) or (ban thanh))) or (va tinh)) vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach y nang xa hoi. hieu va hac thuc ((((gia thanh) OR (ban thanh))) OR (va tinh)) vi cua tre.
• Adding a wildcard symbol may retrieve word variants: vu sach y nang xa hoi. hieu va hac thuc ((((gia thanh) or (ban thanh))) or (va tinh)) vi cua tre*.