Perhaps you should try some spelling variations:
hieu lang » chieu sang, hieu quang, nhieu tang
canh tinh » hanh tinh, manh tinh, canh tranh
dung manh » duong manh, dung danh, hung manh
tinh van » trinh van, dinh van, tinh va
toan cau » toan ban, toan tap, toan tai
toan cao » toan ban, toan tap
ho hieu » ho chieu, hoi hieu, nho hieu
van ung » van dung, van hung, van sung

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho hieu lang - canh tinh van ung dung manh ((toan cau) OR (toan cao))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho hieu lang - canh tinh van ung dung manh ((toan cau) OR (toan cao))".
• Adding a wildcard symbol may retrieve word variants: ho hieu lang - canh tinh van ung dung manh ((toan cau) OR (toan cao))*.