Perhaps you should try some spelling variations:
trang quang » trong quang, tang quang, tranh quang
thieu sang » chieu sang, thieu khang, thieu quang
chieu xanh » chieu sach, chieu sang, chieu tinh
trong manh » trong minh, trong anh, trong mach
manh toan » thanh toan, anh tuan, tinh toan
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) or (chieu xanh)) - hanh ((trang quang) OR (tran quang)) dung trong manh toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu sang) OR (chieu xanh)) - hanh ((trang quang) OR (tran quang)) dung trong manh toan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu sang) or (chieu xanh)) - hanh ((trang quang) OR (tran quang)) dung trong manh toan tap".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu sang) or (chieu xanh)) - hanh ((trang quang) OR (tran quang)) dung trong manh toan tap*.