Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hieu van » hieu va, thien van, lieu va
danh vi » hanh vi, dinh vi, danh di
va danh » va dinh, va dan, va hanh
cam tuc » cam tu, nam thuc, dam thuc
te sach » toc sach
hoa hoi » khoa hoi, hoa hoc, hoa doi
ky dang » ky nang, ky danh
ky lang » ky nang, ky tang, tay lang
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: te sach ((ky lang) or (ky dang)) hoa hoi. hieu van ((cam tuc) OR (cam xuc)) va danh vi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((ky lang) OR (ky dang)) hoa hoi. hieu van ((cam tuc) OR (cam xuc)) va danh vi cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((ky lang) or (ky dang)) hoa hoi. hieu van ((cam tuc) OR (cam xuc)) va danh vi cua triet".
• Adding a wildcard symbol may retrieve word variants: te sach ((ky lang) or (ky dang)) hoa hoi. hieu van ((cam tuc) OR (cam xuc)) va danh vi cua triet*.