Perhaps you should try some spelling variations:
nhung duong » nhung huong, nhung tuong, chuong duong
chieu sach » chinh sach, chiet tach, chieu sang
hanh trinh » canh tranh, hanh chinh
nhung dung » phuong dung, ung dung, thong dung
trinh vat » trinh van, trinh luat, sinh vat
ho chieu » theo chieu, hoc thieu, doi chieu
van nang » van quang, van ban, van dung

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho chieu sach - hanh trinh vat ((nhung duong) OR (nhung dung)) ((van nang) or (van dong)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - hanh trinh vat ((nhung duong) OR (nhung dung)) ((van nang) OR (van dong)) cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sach - hanh trinh vat ((nhung duong) OR (nhung dung)) ((van nang) or (van dong)) cao".
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - hanh trinh vat ((nhung duong) OR (nhung dung)) ((van nang) or (van dong)) cao*.