Perhaps you should try some spelling variations:
tu sach » thu sach, su sach, te sach
van hoi » van hoc, van hoe, van loi
qua cau » quan cau, qua cac, qua ca
cau tuc » cau truc, cau tu, cau luc
va hanh » van hanh, va thanh, va danh
y lang » o lang, _ lang, tay lang
tuc va » thuc va, truc va, tuc xa
vi cua » vai cua, di cua
cua te » cua tu

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

• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y lang ((van hoi) OR (van hoa)). hieu qua cau tuc va hanh vi cua te~.
• Adding a wildcard symbol may retrieve word variants: tu sach y lang ((van hoi) or (van hoa)). hieu qua cau tuc va hanh vi cua te*.