Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thu sach » thuat sach, thuoc sach, thu hoach
hanh lai » hanh lam, hanh tai, thanh lap
nang van » dang van, tang van, lang van
hieu van » hieu va, thien van, lieu va
lai cua » dai cua, hai cua, lai chau
tu sach » su sach, te sach, tu cach
van hoc » van hoa
van cau » van dau, van hau, van chat
xuc va » duc va, tuc va, xac va
luc va » duc va, tuc va, loc va

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) OR (thu sach)) ky nang van hoc. hieu van cau ((xuc va) OR (luc va)) hanh lai cua triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) OR (thu sach)) ky nang van hoc. hieu van cau ((xuc va) OR (luc va)) hanh lai cua triet".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) OR (thu sach)) ky nang van hoc. hieu van cau ((xuc va) OR (luc va)) hanh lai cua triet*.