Perhaps you should try some spelling variations:
hanh thong » anh thong, hanh trong, hang thong
chieu sang » chieu sach, chieu xanh, nhieu tang
hieu lang » hieu quang, nhieu tang, hieu van
dung cong » dung trong
cong luan » tong luan, cong tuan, dong luan
cua tinh » cua sinh, va tinh, ha tinh
thong tu » phong tuc, thong tin, thong ke
tu dung » tuc dung, tu duong, su dung

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 sang) or (hieu lang))) or (cua tinh)) - hanh thong tu dung cong luan van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((((chieu sang) OR (hieu lang))) OR (cua tinh)) - hanh thong tu dung cong luan van ban.
• Adding a wildcard symbol may retrieve word variants: ho ((((chieu sang) or (hieu lang))) or (cua tinh)) - hanh thong tu dung cong luan van ban*.