Perhaps you should try some spelling variations:
trong thanh » truong thanh, trung thanh, rong thanh
theo chieu » theo tieu, ho chieu, theo chu
chieu xanh » chieu sach, chieu sang, chieu tinh
nang quang » nang quan, dang quang, hang quang
quang dung » quang trung, ung dung, cuong dung
ganh nang » anh nang, nganh nong, van nang

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 xanh - ganh nang quang dung trong thanh ((van ban) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu xanh - ganh nang quang dung trong thanh ((van ban) OR (toan ban))*.