Perhaps you should try some spelling variations:
hieu viec » nhieu viec, sieu viet, hieu hien
bach xuc » bach tuoc, bach xuan, bach hue
nang dai » nang dau, nang tai, lang dai
dai khoa » da khoa, tai khoa, dac khoa
lai cua » hai cua, lai chau, thai cua
va hanh » van hanh, va thanh, va danh
tu sach » thu sach, su sach, te sach
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
hieu ve » hieu va, hieu van
xuc va » duc va, tuc va, luc va

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ty nang dai khoa. ((hieu viec) or (hieu ve)) bach xuc va hanh ((lai cua) or (dai cua)) viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty nang dai khoa. ((hieu viec) OR (hieu ve)) bach xuc va hanh ((lai cua) OR (dai cua)) viet.
• Adding a wildcard symbol may retrieve word variants: tu sach ty nang dai khoa. ((hieu viec) or (hieu ve)) bach xuc va hanh ((lai cua) or (dai cua)) viet*.