Perhaps you should try some spelling variations:
ban thanh » ban hanh
cau tren » cu tren, dau tren, ca tren
ban hang » ngan hang
hieu van » hieu va, thien van, lieu va
te sach » toc sach
cau xuc » cam xuc, cau luc, cau truc
ty nang » ky nang, ty hang, ly nang
van cau » van dau, van hau, van chat
di cau » da cau, diem cau

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 hoa. hieu van cau xuc ((ban thanh) or (ban hang)) di cau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((ty nang) OR (ty xang)) ma hoa. hieu van cau xuc ((ban thanh) OR (ban hang)) di cau tren.
• Adding a wildcard symbol may retrieve word variants: te sach ((ty nang) or (ty xang)) ma hoa. hieu van cau xuc ((ban thanh) or (ban hang)) di cau tren*.