Perhaps you should try some spelling variations:
ban thanh » ban hanh
hieu van » hieu va, thien van, lieu va
ban hang » ngan hang
nam xuc » cam xuc, nam xua, nam thuc
te sach » toc sach
ty nang » ky nang, ty hang, ly nang
cuu tre » cua tre, cau tren, cau treo
ma hoi » mai hoi, xa hoi, ma hoa
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: te sach ((ty nang) or (ty xang)) ma hoi. hieu van nam xuc ((ban thanh) or (ban hang)) vi cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((ty nang) OR (ty xang)) ma hoi. hieu van nam xuc ((ban thanh) OR (ban hang)) vi cuu tre.
• Adding a wildcard symbol may retrieve word variants: te sach ((ty nang) or (ty xang)) ma hoi. hieu van nam xuc ((ban thanh) or (ban hang)) vi cuu tre*.