Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thien van » thi van
cay phoi » cap phoi, tay hoi, cay cho
nam thuc » nam thuoc, am thuc, nam thu
hanh cua » manh cua, hang cua, hanh sua
xay hoi » xa hoi, tay hoi, gay thoi
ky dang » ky nang, ky danh
thuc va » thuc vat, thuc dan, thuc day
hanh ca » hanh cac, hanh cat, hanh cad
sac ky » cac ky, sai ky
te sac » te sach, te cac, te san

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sac ky dang ((xay hoi) or (cay phoi)). thien van nam thuc va ((hanh ca) OR (hanh cua)) cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sac ky dang ((xay hoi) OR (cay phoi)). thien van nam thuc va ((hanh ca) OR (hanh cua)) cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sac ky dang ((xay hoi) or (cay phoi)). thien van nam thuc va ((hanh ca) OR (hanh cua)) cua triet".
• Adding a wildcard symbol may retrieve word variants: te sac ky dang ((xay hoi) or (cay phoi)). thien van nam thuc va ((hanh ca) OR (hanh cua)) cua triet*.