Perhaps you should try some spelling variations:
hieu lang » chieu sang, hieu quang, nhieu tang
canh manh » lanh manh, canh tranh, cach mang
bang cong » hang cong, dung cong, cong cong
bang song » nang song
dang cong » dung cong
doi hieu » doi chieu, doc hieu, doi hien
manh cua » doanh cua, ban cua
dan toan » van toan, dan than, manh toan
toan cau » toan cao, toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi hieu lang - canh manh cua ((((bang cong) OR (bang song))) or (dang cong)) dan toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi hieu lang - canh manh cua ((((bang cong) OR (bang song))) OR (dang cong)) dan toan cau*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi hieu lang - canh manh cua ((((bang cong) OR (bang song))) or (dang cong)) dan toan cau*".