Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
van hanh » van thanh, ban hanh, van anh
ty nang » ty xang, ty hang, ly nang
hieu va » lieu va, hieu qua
dat van » dao van, dat va, dam van
ma hoi » mai hoi, xa hoi, me hoi
va cai » va cac, va bai, va dai
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: thuat sach ((ty nang) or (ky nang)) ((ma hoi) or (ma hoa)). hieu va cai dat van hanh vi cua vat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sach ((ty nang) OR (ky nang)) ((ma hoi) OR (ma hoa)). hieu va cai dat van hanh vi cua vat.
• Adding a wildcard symbol may retrieve word variants: thuat sach ((ty nang) or (ky nang)) ((ma hoi) or (ma hoa)). hieu va cai dat van hanh vi cua vat*.