Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thanh tai » thanh hai, thanh toan, doanh tai
dan thanh » dang thanh, danh thanh, ban thanh
nam thuc » nam thuoc, am thuc, nam thu
thuc dan » thuc hanh, hoc dan, thuc vat
nang xa » lang xa, nang ma, mang xa
hieu ve » hieu va, hieu van
tai cua » thai cua, tai cuc, tri cua
ve nam » he nam, va nam, le nam

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

• Performing a fuzzy search may retrieve terms with similar spellings: su ((sach y) or (sach 2)) ((nang xa) or (nang x)) hoi. hieu ve nam thuc dan thanh tai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su ((sach y) OR (sach 2)) ((nang xa) OR (nang x)) hoi. hieu ve nam thuc dan thanh tai cua triet.
• Adding a wildcard symbol may retrieve word variants: su ((sach y) or (sach 2)) ((nang xa) or (nang x)) hoi. hieu ve nam thuc dan thanh tai cua triet*.