Perhaps you should try some spelling variations:
quang trong » quang truong, quang trung, quan trong
theo chieu » theo tieu, ho chieu, theo chu
chieu sach » chinh sach, chiet tach, chieu sang
nang hang » nang sang, cang thang, lang thang
hang hang » cang thang, hung thang, lang thang
cong bang » cuong bang, dong bang, hong bang
bang than » bang thanh, ban than, sang than
than ban » thanh ban, toan ban, than man

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo chieu sach - ((nang hang) or (hang hang)) quang trong cong bang than ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu sach - ((nang hang) OR (hang hang)) quang trong cong bang than ban.
• Adding a wildcard symbol may retrieve word variants: theo chieu sach - ((nang hang) or (hang hang)) quang trong cong bang than ban*.