Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hieu van » hieu va, thien van, lieu va
su sach » so sach, vu sach
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
cao hoi » cau hoi, co hoi, cao hoc
xuc va » duc va, tuc va, luc va
vi cua » vai cua, di cua

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 cao hoi. hieu van nam ((xuc va) or (tuc xa)) hanh vi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty nang cao hoi. hieu van nam ((xuc va) OR (tuc xa)) hanh vi cua triet.
• Adding a wildcard symbol may retrieve word variants: su sach ty nang cao hoi. hieu van nam ((xuc va) or (tuc xa)) hanh vi cua triet*.