Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hieu van » hieu va, thien van, lieu va
van cham » van chat, van tham, va cham
cham tuc » nham thuc, pham thuc, tham thuc
vu sach » su sach, vu khach
hoc anh » hoc nganh, hoc nhanh, ngoc anh
nang ma » tang ma, sang ma, nang cao
xa hanh » xa thanh, xa khanh, va hanh
ma hoi » mai hoi, xa hoi, ma hoa
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: ((((vu sach) or (vu bach))) or (hoc anh)) ky nang ma hoi. hieu van cham tuc xa hanh vi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((vu sach) OR (vu bach))) OR (hoc anh)) ky nang ma hoi. hieu van cham tuc xa hanh vi cua triet.
• Adding a wildcard symbol may retrieve word variants: ((((vu sach) or (vu bach))) or (hoc anh)) ky nang ma hoi. hieu van cham tuc xa hanh vi cua triet*.