Perhaps you should try some spelling variations:
dinh vai » dinh van, dinh vi, dinh va
cau phuc » cau truc, chau phu, huu phuc
tu sach » thu sach, su sach, te sach
hieu va » lieu va, hieu qua
vai cua » dai cua, hai cua, lai cua
va dinh » van dinh, va kinh, va tinh
hieu ve » hieu van
phuc va » phuc vu, thuc va, chuc va
y nang » ky nang, ly nang, may nang
v nang » va nang, vu nang, van nang
cua te » cua tu

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 ((y nang) or (v nang)) xa hoi. ((hieu ve) or (hieu va)) cau phuc va dinh vai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((y nang) OR (v nang)) xa hoi. ((hieu ve) OR (hieu va)) cau phuc va dinh vai cua te.
• Adding a wildcard symbol may retrieve word variants: tu sach ((y nang) or (v nang)) xa hoi. ((hieu ve) or (hieu va)) cau phuc va dinh vai cua te*.