Perhaps you should try some spelling variations:
nhung luong » hung luong, nhung tuong, thuong luong
nhung huong » nhung phuong, nhung tuong, nhung cong
chieu sach » chinh sach, chiet tach, chieu sang
hanh trinh » canh tranh
doi chieu » doc hieu, doi chi, ho chieu
manh toan » thanh toan, anh tuan, tinh toan
toan cau » toan cao, toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi chieu sach - ((hanh trinh) OR (hanh chinh)) luat ((nhung luong) or (nhung huong)) manh toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sach - ((hanh trinh) OR (hanh chinh)) luat ((nhung luong) OR (nhung huong)) manh toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu sach - ((hanh trinh) OR (hanh chinh)) luat ((nhung luong) or (nhung huong)) manh toan cau".
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - ((hanh trinh) OR (hanh chinh)) luat ((nhung luong) or (nhung huong)) manh toan cau*.