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
sach ky » sac ky, sach y, sach ty
hieu ve » hieu va, hieu van
cac xuc » cam xuc, cac nuoc, chat xuc
lua tre » cua tre, luy tre, dua tren
ve cac » va cac, vien cac
vi lua » vi luu
x hoi » xa hoi, o hoi, x ho

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