Perhaps you should try some spelling variations:
ly quang » le quang, vu quang
cac truc » cau truc, cac tru, cac trung
hanh mai » hanh ma, hanh mau, hanh may
duc tien » duc thien, luc tieng, thuc tien
co sach » bo sach, cuon sach, hoc sach
hieu va » lieu va, hieu qua
truc va » thuc va, thuc vat, trung va
va hanh » van hanh, va thanh, va danh
mai duc » mai dich, mai quoc, mai dung

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

• Performing a fuzzy search may retrieve terms with similar spellings: co sach ((ly hang) or (ly quang)) xa hoi. hieu va cac truc va hanh mai duc tien~.
• If you are trying to use Boolean operators, they must be ALL CAPS: co sach ((ly hang) OR (ly quang)) xa hoi. hieu va cac truc va hanh mai duc tien.
• Adding a wildcard symbol may retrieve word variants: co sach ((ly hang) or (ly quang)) xa hoi. hieu va cac truc va hanh mai duc tien*.