Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
vu khach » vu khanh, vu khac, vay khach
ky tang » ky nang, ky dang, kho tang
tang ma » mang may, tang van
hieu va » lieu va, hieu qua
danh vi » dinh vi, danh di, danh va
te sach » toc sach
ma hoi » mai hoi, xa hoi, ma hoa
va dat » va dao, va dau, va dap
nuoc » quoc, duoc, ngoc

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) or (vu khach)) ky tang ma hoi. hieu va dat nuoc va ((danh vi) OR (hanh vi)) cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (vu khach)) ky tang ma hoi. hieu va dat nuoc va ((danh vi) OR (hanh vi)) cua triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sach) or (vu khach)) ky tang ma hoi. hieu va dat nuoc va ((danh vi) OR (hanh vi)) cua triet*".