Perhaps you should try some spelling variations:
cua viet » ca viet, hoa viet, cua vat
hanh vai » hanh vi, hanh va, hanh tai
van hanh » van thanh, ban hanh, van anh
vai cua » dai cua, hai cua, lai cua
xuc van » duc van, luc van, xuc ban
su sach » vu sach
cao hoi » cau hoi, co hoi, cao hoc
so sach » so sanh, bo sach, co sach
ve cam » ve cham, va cam, ve cai
ve cac » va cac, vien cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((su sach) or (so sach)) ky nang cao hoi. hieu ((ve cam) or (ve cac)) xuc van hanh vai cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (so sach)) ky nang cao hoi. hieu ((ve cam) OR (ve cac)) xuc van hanh vai cua viet.
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (so sach)) ky nang cao hoi. hieu ((ve cam) or (ve cac)) xuc van hanh vai cua viet*.