Perhaps you should try some spelling variations:
hanh vai » hanh vi, hanh va, hanh tai
hang tai » hang va, dung tai
su sach » vu sach
vai cua » dai cua, hai cua, lai cua
va hanh » van hanh, va thanh, va danh
cam duc » cao duc, pham duc, nam duoc
tai hoi » tai khoi, dai hoi, tai hai
ty hang » ly hang, ty xang, thi hang
so sach » so sanh, bo sach, co sach
cua te » cua tu

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)) ty hang tai hoi. hieu qua ((cam duc) OR (cam xuc)) va hanh vai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (so sach)) ty hang tai hoi. hieu qua ((cam duc) OR (cam xuc)) va hanh vai cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) or (so sach)) ty hang tai hoi. hieu qua ((cam duc) OR (cam xuc)) va hanh vai cua te".
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (so sach)) ty hang tai hoi. hieu qua ((cam duc) OR (cam xuc)) va hanh vai cua te*.