Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hieu van » hieu va, thien van, lieu va
thanh ve » hanh ve, thanh va, thanh vien
thanh vi » hanh vi, thanh va, nhanh vi
hieu ve » hieu va
sach ty » sach y, sach tu, sach thu
duc ban » duc tan, duc van, dua ban
nang xa » nang x, lang xa, nang ma
ty nang » ky nang, ty xang, ty hang
su sach » so sach, vu sach

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 xa hoi. ((hieu ve) or (hieu van)) pham duc ban ((thanh vi) or (thanh ve)) cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty nang xa hoi. ((hieu ve) OR (hieu van)) pham duc ban ((thanh vi) OR (thanh ve)) cua triet.
• Adding a wildcard symbol may retrieve word variants: su sach ty nang xa hoi. ((hieu ve) or (hieu van)) pham duc ban ((thanh vi) or (thanh ve)) cua triet*.