Perhaps you should try some spelling variations:
nhung phuong » dung phuong, nhu phuong, truong phuong
thieu sang » chieu sang, thieu khang, thieu quang
hoc thieu » toc thieu, hoc hien
manh toan » thanh toan, anh tuan, tinh toan
trang va » tran van, hang va
toan ban » van ban
tang va » tang van, thang va, tang vat

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 ((tang va) or (trang va)) ((nhung phuong) or (bang phuong)) manh toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sang - hanh ((tang va) OR (trang va)) ((nhung phuong) OR (bang phuong)) manh toan ban.
• Adding a wildcard symbol may retrieve word variants: hoc thieu sang - hanh ((tang va) or (trang va)) ((nhung phuong) or (bang phuong)) manh toan ban*.