Perhaps you should try some spelling variations:
so sach » so sanh, bo sach, co sach
cao hoi » cau hoi, co hoi, cao hoc
hieu ve » hieu va, hieu van
cam tuc » cam xuc, cam tu, nam thuc
va tinh » may tinh
y nang » ky nang, ly nang, v nang
tuc va » thuc va, truc va, tuc xa
vi hoa » voi hoa, vi hoc, bi hoa
va hoa » van hoa, va hoc, ma hoa

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sach y nang cao hoi. ((hieu ve) or (lieu va)) cam tuc va tinh ((vi hoa) or (va hoa)) viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach y nang cao hoi. ((hieu ve) OR (lieu va)) cam tuc va tinh ((vi hoa) OR (va hoa)) viet.
• Adding a wildcard symbol may retrieve word variants: so sach y nang cao hoi. ((hieu ve) or (lieu va)) cam tuc va tinh ((vi hoa) or (va hoa)) viet*.