Perhaps you should try some spelling variations:
cua viet » ca viet, hoa viet, cua vat
nang van » dang van, tang van, lang van
hanh lai » hanh lam, hanh tai, thanh lap
thu sach » tu sach, thuat sach, thuoc sach
van hoc » van hoa
van cam » van lam, van cau, van dam
va hanh » van hanh, va thanh, va danh
lai cua » dai cua, hai cua, lai chau
su sach » so sach, vu sach
xuc va » duc va, tuc va, luc va

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 (thu sach)) ky nang van hoc. hieu ((van cam) OR (van nam)) xuc va hanh lai cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (thu sach)) ky nang van hoc. hieu ((van cam) OR (van nam)) xuc va hanh lai cua viet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) or (thu sach)) ky nang van hoc. hieu ((van cam) OR (van nam)) xuc va hanh lai cua viet".
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (thu sach)) ky nang van hoc. hieu ((van cam) OR (van nam)) xuc va hanh lai cua viet*.