Perhaps you should try some spelling variations:
thong hoang » phuong hoang, thong thong, khung hoang
chieu sang » chieu sach, chieu xanh, hieu lang
thanh dung » thanh duong, thanh tung, thanh hung
hanh dung » anh dung, hanh dong, manh dung
cua thong » cua thuong, cua khong, cua tong
hoang van » hang va
ho chieu » theo chieu, hoc thieu, doi chieu
luan ban » luan van, luan san, luan han

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sang - ((hanh dung) OR (thanh dung)) cua thong hoang van ((luan ban) OR (van ban))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sang - ((hanh dung) OR (thanh dung)) cua thong hoang van ((luan ban) or (van ban))~".
• Adding a wildcard symbol may retrieve word variants: ho chieu sang - ((hanh dung) OR (thanh dung)) cua thong hoang van ((luan ban) or (van ban))*.