Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
doanh van » doan van, doanh va, doanh ban
danh vai » danh sai, danh va, dang van
nang co » nang cao, nang doc, nang noi
sach ky » sach y, sach ty, sach kem
thuc va » thuc vat, thuc dan, thuc day
co hoi » co hoc, co loi
sac ky » cac ky, sai ky
qua am » quan am, qua ap, cua am

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: thu ((sach ky) OR (sac ky)) nang co hoi. hieu qua am thuc va ((danh vai) OR (doanh van)) cua triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu ((sach ky) OR (sac ky)) nang co hoi. hieu qua am thuc va ((danh vai) or (doanh van)) cua triet~".
• Adding a wildcard symbol may retrieve word variants: thu ((sach ky) OR (sac ky)) nang co hoi. hieu qua am thuc va ((danh vai) or (doanh van)) cua triet*.