Perhaps you should try some spelling variations:
hieu van » thien van, lieu va, hieu ve
ban hang » ngan hang
te sach » toc sach
ky lang » ky nang, ky tang, tay lang
ky dang » ky nang, ky danh
hieu va » lieu va, hieu qua
xuc ban » duc ban, cuc ban, quoc ban
hang vi » hang va, hanh vi, hang di
cua tre » cua te, cuu tre, cua triet
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: te sach ((ky lang) OR (ky dang)) xa hoi. ((hieu van) or (hieu va)) cam xuc ban hang vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((ky lang) OR (ky dang)) xa hoi. ((hieu van) OR (hieu va)) cam xuc ban hang vi cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((ky lang) OR (ky dang)) xa hoi. ((hieu van) or (hieu va)) cam xuc ban hang vi cua tre".
• Adding a wildcard symbol may retrieve word variants: te sach ((ky lang) OR (ky dang)) xa hoi. ((hieu van) or (hieu va)) cam xuc ban hang vi cua tre*.