Perhaps you should try some spelling variations:
ban hang » ngan hang
dinh cau » dinh chau, dinh cuu, dinh cu
cau tren » cu tren, dau tren, ca tren
vu sach » vu bach, su sach, vu khach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
qua cac » cua cac
cac xuc » cam xuc, cac nuoc, chat xuc
va hanh » van hanh, va thanh, va danh

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 ky nang xa hoi. hieu qua cac xuc ((va hanh) or (ban hang)) dinh cau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ky nang xa hoi. hieu qua cac xuc ((va hanh) OR (ban hang)) dinh cau tren.
• Adding a wildcard symbol may retrieve word variants: vu sach ky nang xa hoi. hieu qua cac xuc ((va hanh) or (ban hang)) dinh cau tren*.