Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
chieu sang » chieu sach, chieu xanh, nhieu tang
hieu lang » hieu quang, nhieu tang, hieu van
hanh hang » thanh hang, hang hang, hanh han
dung cong » dung trong
cong danh » cuong danh, cong dan, cong thanh
danh toan » manh toan, anh toan, dan toan
toan cau » toan cao, toan ban, toan tap
va dung » van dung, va duong, vat dung

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((((chieu tinh) or (chieu sang))) or (hieu lang)) - hanh hang va dung cong danh toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((((chieu tinh) OR (chieu sang))) OR (hieu lang)) - hanh hang va dung cong danh toan cau.
• Adding a wildcard symbol may retrieve word variants: ho ((((chieu tinh) or (chieu sang))) or (hieu lang)) - hanh hang va dung cong danh toan cau*.