Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
tham thuc » nham thuc, pham thuc, tam thuc
hieu van » thien van, lieu va
nang ma » tang ma, sang ma, nang cao
hieu va » lieu va, hieu qua
thuc va » thuc vat, thuc dan, thuc day
va danh » va dinh, va dan, va hanh
danh vi » hanh vi, dinh vi, danh di
te sach » toc sach
ma hoi » mai hoi, xa hoi, ma hoa
sach v » sach va, sach y, sach 2
v nang » va nang, vu nang, van nang
vi cua » vai cua, di cua

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: te sach v nang ma hoi. ((((hieu ve) OR (hieu van))) OR (hieu va)) tham thuc va danh vi cua triet~.
• Adding a wildcard symbol may retrieve word variants: te sach v nang ma hoi. ((((hieu ve) or (hieu van))) or (hieu va)) tham thuc va danh vi cua triet*.