Perhaps you should try some spelling variations:
khuong tinh » chuong trinh, phuong trinh, phuong binh
thieu sang » chieu sang, thieu khang, thieu quang
chu khuong » chu khong, chu phuong, chuc thuong
hoc thieu » toc thieu, hoc hien
thong cua » thong quan, thong tu, huong cua
tang luan » dung luan
toan tap » toan ban

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 sang - hanh ((thong cua) or (tang luan)) chu khuong tinh toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sang - hanh ((thong cua) OR (tang luan)) chu khuong tinh toan tap.
• Adding a wildcard symbol may retrieve word variants: hoc thieu sang - hanh ((thong cua) or (tang luan)) chu khuong tinh toan tap*.