Perhaps you should try some spelling variations:
hanh vai » hanh va, hanh tai, hanh van
va triet » va thiet, va trien, ve triet
su sach » so sach, vu sach
cao hoi » cau hoi, co hoi, cao hoc
hieu va » lieu va, hieu qua
y nang » ky nang, ly nang, v nang
va nam » van nam, ha nam, va nay
thu va » thuc va, thue va, tu 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 y nang cao hoi. hieu va nam thu va ((hanh vai) OR (hanh vi)) va triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach y nang cao hoi. hieu va nam thu va ((hanh vai) OR (hanh vi)) va triet".
• Adding a wildcard symbol may retrieve word variants: su sach y nang cao hoi. hieu va nam thu va ((hanh vai) OR (hanh vi)) va triet*.