Perhaps you should try some spelling variations:
su triet » su viet, su tien, ve triet
nam thuc » nam thuoc, am thuc, nam thu
thi hang » thi nang, thi hong, thi thanh
hang vai » hang tai, hang hai, hang vi
thi hanh » thi thanh
thuc va » thuc vat, thuc dan, thuc day
tu sach » thu sach, su sach, te sach
hieu le » hieu ve, hieu he, hieu ly
le nam » ly nam, he nam, le na

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ((thi hang) or (thi hanh)) xa hoi. hieu le nam thuc va ((hang vai) or (hang va)) su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((thi hang) OR (thi hanh)) xa hoi. hieu le nam thuc va ((hang vai) OR (hang va)) su triet.
• Adding a wildcard symbol may retrieve word variants: tu sach ((thi hang) or (thi hanh)) xa hoi. hieu le nam thuc va ((hang vai) or (hang va)) su triet*.