Perhaps you should try some spelling variations:
ban hang » ngan hang
van hanh » van thanh, ban hanh, van anh
vu sach » vu bach, su sach, vu khach
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
cac xuc » cam xuc, cac nuoc, chat xuc
cuu tre » cua tre, cau tren, cau treo
y nang » ky nang, ly nang, v nang
ve cac » va cac, vien cac
vi cuu » vi luu, vinh cuu

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 ve cac xuc ((((ban hang) or (van hanh))) or (gia thanh)) vi cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach y nang xa hoi. hieu ve cac xuc ((((ban hang) OR (van hanh))) OR (gia thanh)) vi cuu tre.
• Adding a wildcard symbol may retrieve word variants: vu sach y nang xa hoi. hieu ve cac xuc ((((ban hang) or (van hanh))) or (gia thanh)) vi cuu tre*.