Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
danh vi » hanh vi, dinh vi, danh di
truc va » thuc va, thuc vat, trung va
te sach » toc sach
hieu ve » hieu va, hieu van
hoa hoi » khoa hoi, hoa hoc, hoa doi
ky dang » ky nang, ky danh
ky lang » ky nang, ky tang, tay lang
tuc va » thuc va, tuc xa, duc va
vi cua » vai cua, di cua
ve cam » ve cham, ve cac, va cam

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 ve cam ((tuc va) OR (truc 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 ve cam ((tuc va) OR (truc 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 ve cam ((tuc va) OR (truc va)) danh vi cua triet".
• Adding a wildcard symbol may retrieve word variants: te sach ((ky lang) or (ky dang)) hoa hoi. hieu ve cam ((tuc va) OR (truc va)) danh vi cua triet*.