Perhaps you should try some spelling variations:
van cham » van chat, va cham, van pham
van tham » van thanh, van tuan, van chat
hanh lai » hanh lam, hanh tai, thanh lap
su triet » su viet, su tien, ve triet
su sach » vu sach
so sach » so sanh, bo sach, co sach
cao hoi » cau hoi, co hoi, cao hoc
va hanh » van hanh, va thanh, va danh
tuc va » thuc va, truc va, tuc xa

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. thien ((van cham) or (van tham)) tuc va hanh lai su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (so sach)) ky nang cao hoi. thien ((van cham) OR (van tham)) tuc va hanh lai su triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) OR (so sach)) ky nang cao hoi. thien ((van cham) or (van tham)) tuc va hanh lai su triet".
• Adding a wildcard symbol may retrieve word variants: ((su sach) OR (so sach)) ky nang cao hoi. thien ((van cham) or (van tham)) tuc va hanh lai su triet*.