Perhaps you should try some spelling variations:
thien van » thi van
su triet » su viet, su tien, ve triet
hanh lam » thanh lap, hanh kem, hanh va
hanh lai » hanh tai, thanh lap, thanh loi
van cham » van chat, van tham, va cham
nang cau » nang cao, hang cau, nang dau
sac ky » cac 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 ((sac ky) or (sai ky)) nang cau hoi. thien van cham soc va ((hanh lai) OR (hanh lam)) 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 ((hanh lai) OR (hanh lam)) 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 ((hanh lai) OR (hanh lam)) su triet".
• Adding a wildcard symbol may retrieve word variants: tu ((sac ky) or (sai ky)) nang cau hoi. thien van cham soc va ((hanh lai) OR (hanh lam)) su triet*.