Perhaps you should try some spelling variations:
luong quang » luong quan, dung quang
hanh trong » hanh trang, anh trong, chinh trong
hinh trong » chinh trong, dinh trong, sinh trong
dung luong » dung thuong, dung phuong, dung truong
quang doan » quan doan, quang hoan, quang toan
hoc thieu » toc thieu, hoc hien
ho chieu » theo chieu, doi chieu, mot chieu
doan ban » doanh ban, toan ban, doan van

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) OR (hoc thieu)) xanh - ((hanh trong) or (hinh trong)) ung dung luong quang doan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (hoc thieu)) xanh - ((hanh trong) OR (hinh trong)) ung dung luong quang doan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) OR (hoc thieu)) xanh - ((hanh trong) or (hinh trong)) ung dung luong quang doan ban".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) OR (hoc thieu)) xanh - ((hanh trong) or (hinh trong)) ung dung luong quang doan ban*.