Perhaps you should try some spelling variations:
thieu sang » chieu sang, thieu khang, thieu quang
hanh trang » thanh trung, hanh trinh, minh trang
hoc thieu » toc thieu, hoc hien
tong cong » trong cong, cong cong, dung cong
cong danh » cuong danh, cong dan, cong thanh
danh toan » manh toan, anh toan, dan toan
toan tap » toan ban
va tong » va thong, va tuong, va trong

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc thieu sang - ((hanh trang) or (canh tranh)) va tong cong danh toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sang - ((hanh trang) OR (canh tranh)) va tong cong danh toan tap.
• Adding a wildcard symbol may retrieve word variants: hoc thieu sang - ((hanh trang) or (canh tranh)) va tong cong danh toan tap*.