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 » so sach, vu sach
sach ky » sac ky, sach y, sach ty
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 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 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 ky nang cao hoi. thien ((van cham) or (van tham)) tuc va hanh lai su triet*.