Perhaps you should try some spelling variations:
thieu quang » thien quan, trien quang, hieu quan
hieu quang » hieu quan, hieu qua, diep quang
cong danh » cuong danh, cong dan, cong thanh
danh tuan » anh tuan, manh tuan, danh thanh
van dung » van dong, xay dung
tuan cau » toan cau, quan cau, tuan cu

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 quang) OR (hieu quang)) - canh tranh ((van dung) or (tin dung)) cong danh tuan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu quang) OR (hieu quang)) - canh tranh ((van dung) OR (tin dung)) cong danh tuan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu quang) OR (hieu quang)) - canh tranh ((van dung) or (tin dung)) cong danh tuan cau".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu quang) OR (hieu quang)) - canh tranh ((van dung) or (tin dung)) cong danh tuan cau*.