Perhaps you should try some spelling variations:
ve triet » va trien, su triet
nam thuc » nam thuoc, am thuc, nam thu
thi hanh » thi thanh
hanh ma » hanh mau, hanh may, hanh va
hanh la » hanh lam, hanh va, hang la
thuc va » thuc vat, thuc dan, thuc day
tu cach » tu cac
hieu ve » hieu va, hieu van
hanh xa » hanh va, hanh xu, canh xa
te sach » toc sach
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: ((tu cach) or (te sach)) thi hanh xa hoi. hieu ve nam thuc va ((hanh la) OR (hanh ma)) ve triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu cach) OR (te sach)) thi hanh xa hoi. hieu ve nam thuc va ((hanh la) OR (hanh ma)) ve triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu cach) or (te sach)) thi hanh xa hoi. hieu ve nam thuc va ((hanh la) OR (hanh ma)) ve triet".
• Adding a wildcard symbol may retrieve word variants: ((tu cach) or (te sach)) thi hanh xa hoi. hieu ve nam thuc va ((hanh la) OR (hanh ma)) ve triet*.