Perhaps you should try some spelling variations:
lan cham » gian cham, luan chat, lang chai
nang cau » nang cao, hang cau, nang dau
su sach » so sach, vu sach
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
thi lan » thi hanh, thi nang, thi lien
lai cua » dai cua, hai cua, thai cua
soc va » hoc va, loc va, goc va
doc va » duoc va, hoc va, duc va

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 ty nang cau hoi. thi lan cham ((soc va) OR (doc va)) hanh ((lai cua) or (lai chau)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty nang cau hoi. thi lan cham ((soc va) OR (doc va)) hanh ((lai cua) OR (lai chau)) triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ty nang cau hoi. thi lan cham ((soc va) OR (doc va)) hanh ((lai cua) or (lai chau)) triet".
• Adding a wildcard symbol may retrieve word variants: su sach ty nang cau hoi. thi lan cham ((soc va) OR (doc va)) hanh ((lai cua) or (lai chau)) triet*.