Perhaps you should try some spelling variations:
su triet » su viet, su tien, ve triet
thuc van » thuc vat, thuc dan, thuc va
hang doi » hang di, hang loi, huong doi
hang ton » hang nong, hang cong, hang tai
cac thuc » cach thuc, cac thu, can thuc
hieu va » lieu va, hieu qua
nang xa » nang x, lang xa, nang ma
sach v » sach va, sach 2, sach vay

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu ((sach v) OR (sach y)) nang xa hoi. hieu va cac thuc van ((hang ton) or (hang doi)) su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu ((sach v) OR (sach y)) nang xa hoi. hieu va cac thuc van ((hang ton) OR (hang doi)) su triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu ((sach v) OR (sach y)) nang xa hoi. hieu va cac thuc van ((hang ton) or (hang doi)) su triet".
• Adding a wildcard symbol may retrieve word variants: vu ((sach v) OR (sach y)) nang xa hoi. hieu va cac thuc van ((hang ton) or (hang doi)) su triet*.