Perhaps you should try some spelling variations:
cau viet » ca viet, chu viet, cao viet
sach ty » sach tu, sach thu, xach tay
hieu va » lieu va, hieu qua
cau xuc » cam xuc, cau luc, cau truc
va hanh » van hanh, va thanh, va danh
va cau » van cau, va cac, va dau
xuc va » duc va, tuc va, luc va
vi cau » ve cau, di cau, viet cau
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: te ((sach ty) or (sach y)) nang x hoi. hieu va cau xuc va hanh vi cau viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sach ty) OR (sach y)) nang x hoi. hieu va cau xuc va hanh vi cau viet.
• Adding a wildcard symbol may retrieve word variants: te ((sach ty) or (sach y)) nang x hoi. hieu va cau xuc va hanh vi cau viet*.