Perhaps you should try some spelling variations:
cham truc » cau truc, nham thuc, pham thuc
va thanh » gia thanh, ban thanh, va tinh
thanh di » thanh doi, thanh de, thanh do
cua viet » ca viet, hoa viet, cua vat
so sach » so sanh, bo sach, co sach
cao hoi » cau hoi, co hoi, cao hoc
hieu ve » hieu van
hieu va » lieu va, hieu qua
truc va » thuc va, thuc vat, trung va
y nang » ky nang, ly nang, v nang
di cua » dai cua, doi cua, de cua

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 (hieu va)) cham truc va thanh di cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach y nang cao hoi. ((hieu ve) OR (hieu va)) cham truc va thanh di cua viet.
• Adding a wildcard symbol may retrieve word variants: so sach y nang cao hoi. ((hieu ve) or (hieu va)) cham truc va thanh di cua viet*.