Perhaps you should try some spelling variations:
ve triet » va trien, su triet
hoc sach » hoc sinh, hoc cac, hoc anh
hieu van » hieu va, thien van, lieu va
va hanh » van hanh, va thanh, va danh
cam tuc » cam xuc, cam tu, nam thuc
hoc sac » hoc cac, hoc mac, hoc sau
cao hoi » cau hoi, co hoi, cao hoc
van cam » van nam, van lam, van cau
tuc va » thuc va, truc va, tuc xa
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) OR (hoc sach)) ky nang cao hoi. hieu van cam tuc va hanh vi ((cua tu) or (ve triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc sac) OR (hoc sach)) ky nang cao hoi. hieu van cam tuc va hanh vi ((cua tu) OR (ve triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc sac) OR (hoc sach)) ky nang cao hoi. hieu van cam tuc va hanh vi ((cua tu) or (ve triet))".
• Adding a wildcard symbol may retrieve word variants: ((hoc sac) OR (hoc sach)) ky nang cao hoi. hieu van cam tuc va hanh vi ((cua tu) or (ve triet))*.