Perhaps you should try some spelling variations:
su triet » su viet, su tien, ve triet
nam thuc » nam thuoc, am thuc, nam thu
va hanh » van hanh, va thanh, va danh
thuc va » thuc vat, thuc dan, thuc day
hieu ve » hieu va, hieu van
nang xa » lang xa, nang ma, mang xa
sach v » sach va, sach 2, sach vay
ve nam » he nam, va nam, le nam
vi su » va su, ve su, ki su

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 v) or (sach y)) ((nang xa) or (nang x)) hoi. hieu ve nam thuc va hanh vi su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su ((sach v) OR (sach y)) ((nang xa) OR (nang x)) hoi. hieu ve nam thuc va hanh vi su triet.
• Adding a wildcard symbol may retrieve word variants: su ((sach v) or (sach y)) ((nang xa) or (nang x)) hoi. hieu ve nam thuc va hanh vi su triet*.