Perhaps you should try some spelling variations:
lan cham » gian cham, luan chat, lang chai
nang cau » nang cao, hang cau, nang dau
sach ky » sach y, sach ty, sach kem
thi lan » thi hanh, thi nang, thi lien
va hanh » van hanh, va thanh, va danh
lai cua » dai cua, hai cua, thai cua
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: so ((sach ky) OR (sac ky)) nang cau hoi. thi lan cham soc va hanh ((lai cua) or (lai chau)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so ((sach ky) OR (sac ky)) nang cau hoi. thi lan cham soc va hanh ((lai cua) OR (lai chau)) triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so ((sach ky) OR (sac ky)) nang cau hoi. thi lan cham soc va hanh ((lai cua) or (lai chau)) triet".
• Adding a wildcard symbol may retrieve word variants: so ((sach ky) OR (sac ky)) nang cau hoi. thi lan cham soc va hanh ((lai cua) or (lai chau)) triet*.