Perhaps you should try some spelling variations:
lanh tranh » canh tranh, lan tranh, hanh trinh
chieu sang » chieu sach, chieu xanh, hieu lang
doi chieu » doc hieu, doi chi, ho chieu
hanh manh » hanh mang, lanh manh, hoang manh
chua bang » chu bang, chua nang, chua xang
bang cong » dang cong, bang song, hang cong
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan ban » van ban

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 sang - ((hanh manh) or (lanh tranh)) chua bang cong dan toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sang - ((hanh manh) OR (lanh tranh)) chua bang cong dan toan ban*.