Perhaps you should try some spelling variations:
cua triet » cua viet, su triet
va triet » va thiet, va trien, ve triet
va thanh » gia thanh, ban thanh, va tinh
hieu van » hieu va, thien van, lieu va
thanh vi » hanh vi, thanh va, thanh ve
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
cham tu » pham tu, chai tu, chay tu
nang xa » nang x, lang xa, nang ma
cam tu » cam thu, nam tu, dam tu

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 ky nang xa hoi. hieu van ((cham tu) OR (cam tu)) va thanh vi ((cua triet) or (va triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky nang xa hoi. hieu van ((cham tu) OR (cam tu)) va thanh vi ((cua triet) OR (va triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky nang xa hoi. hieu van ((cham tu) OR (cam tu)) va thanh vi ((cua triet) or (va triet))".
• Adding a wildcard symbol may retrieve word variants: su sach ky nang xa hoi. hieu van ((cham tu) OR (cam tu)) va thanh vi ((cua triet) or (va triet))*.