Perhaps you should try some spelling variations:
thong quang » thong quan, thong qua, luong quang
dinh thong » dinh thuong, dinh hong, dinh trong
doi chieu » doc hieu, doi chi, mot chieu
quang van » quang ban, quan van, quang uan
van dung » van dong, xay dung, tin dung
php phan » phap phan, phe phan, pho phan
phi phan » phoi phan, chi phan, phe phan

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((doi chieu) or (toc thieu)) sang - dinh thong quang van dung ((php phan) OR (phi phan)) lap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chieu) OR (toc thieu)) sang - dinh thong quang van dung ((php phan) OR (phi phan)) lap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doi chieu) or (toc thieu)) sang - dinh thong quang van dung ((php phan) OR (phi phan)) lap".
• Adding a wildcard symbol may retrieve word variants: ((doi chieu) or (toc thieu)) sang - dinh thong quang van dung ((php phan) OR (phi phan)) lap*.