Perhaps you should try some spelling variations:
nang cau » nang cao, hang cau, nang dau
van cham » van tham, va cham, van pham
van chat » cao chat
hanh lai » hanh lam, hanh tai, thanh lap
su triet » su viet, su tien, ve triet
sach ky » sach y, sach ty, sach kem
va hanh » van hanh, va thanh, va danh
sac ky » cac ky, sai ky
soc va » hoc va, loc va, doc 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 ky) OR (sac ky)) nang cau hoi. thien ((van cham) or (van chat)) soc va hanh lai su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ky) OR (sac ky)) nang cau hoi. thien ((van cham) OR (van chat)) soc va hanh lai su triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach ky) OR (sac ky)) nang cau hoi. thien ((van cham) or (van chat)) soc va hanh lai su triet".
• Adding a wildcard symbol may retrieve word variants: tu ((sach ky) OR (sac ky)) nang cau hoi. thien ((van cham) or (van chat)) soc va hanh lai su triet*.