Perhaps you should try some spelling variations:
quang trong » quang truong, quang trung, quan trong
theo chieu » theo tieu, ho chieu, theo chu
chieu sang » chieu sach, chieu xanh, hieu lang
lang thang » cang thang, dang thanh, hung thang
nang hang » nang sang, hang hang, cang thang
cong ban » cong bang, cong san, cong tan
ban than » ban thanh, van thanh, ban hang
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 sang - ((nang hang) or (lang thang)) quang trong cong ban than ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu sang - ((nang hang) OR (lang thang)) quang trong cong ban than ban.
• Adding a wildcard symbol may retrieve word variants: theo chieu sang - ((nang hang) or (lang thang)) quang trong cong ban than ban*.