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