Perhaps you should try some spelling variations:
cau trung » cau truong, cac trung, cao trung
cua viet » ca viet, hoa viet, cua vat
hanh vai » hanh vi, hanh va, hanh tai
trung va » truong va, trang va, trung ha
vai cua » dai cua, hai cua, lai cua
va hanh » van hanh, va thanh, va danh
tu sach » thu sach, su sach, te sach
hieu ve » hieu va, hieu van
y nang » ky nang, ly nang, may nang
ma hoi » mai hoi, xa hoi, ma hoa
v nang » va nang, vu nang, van nang

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)) ma hoi. ((hieu ve) or (lieu va)) cau trung va hanh vai cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((y nang) OR (v nang)) ma hoi. ((hieu ve) OR (lieu va)) cau trung va hanh vai cua viet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ((y nang) OR (v nang)) ma hoi. ((hieu ve) or (lieu va)) cau trung va hanh vai cua viet*".