Perhaps you should try some spelling variations:
tang tao » sang tao, tang tai, nang tao
te sach » toc sach
va danh » va dinh, va dan, va hanh
ky tang » ky nang, ky dang, kho tang
tao hoi » tao khoi, tao boi, tay hoi
hieu ve » hieu van
sach ky » sac ky, sach y, sach ty
hieu va » lieu va, hieu qua
cam luc » cam xuc, cau luc
vi cua » vai cua, di cua
luc va » duc va, tuc va, loc va

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 tang tao hoi. ((hieu ve) or (hieu va)) cam luc va danh ((vi cua) or (dai cua)) vat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky tang tao hoi. ((hieu ve) OR (hieu va)) cam luc va danh ((vi cua) OR (dai cua)) vat.
• Adding a wildcard symbol may retrieve word variants: te sach ky tang tao hoi. ((hieu ve) or (hieu va)) cam luc va danh ((vi cua) or (dai cua)) vat*.