Perhaps you should try some spelling variations:
nang cau » nang cao, hang cau, nang dau
hieu van » hieu va, thien van, lieu va
su triet » su viet, su tien, ve triet
hoc sac » hoc sach, hoc cac, hoc mac
van lam » van nam
lam luc » lao luc, lam duoc
va hanh » van hanh, va thanh, va danh
sac ky » cac ky, sai ky
luc va » duc va, tuc va, loc va
cua tu » cua tuc, cua su, cua cu

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: hoc sac ky nang cau hoi. hieu van lam luc va hanh vi ((cua tu) or (su triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc sac ky nang cau hoi. hieu van lam luc va hanh vi ((cua tu) OR (su triet)).
• Adding a wildcard symbol may retrieve word variants: hoc sac ky nang cau hoi. hieu van lam luc va hanh vi ((cua tu) or (su triet))*.