Perhaps you should try some spelling variations:
thieu sang » chieu sang, thieu khang, thieu quang
cuu phuong » cac phuong
thu phuong » thi phuong, thu huong, theo phuong
hoc thieu » toc thieu, hoc hien
lanh manh » lanh tranh, lan anh, van manh
cong tinh » cong trinh, cong vinh, cong thanh
long tinh » trong tinh, luong tin, dong tin
thanh dau » thanh dat, thanh dam, thanh mau

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 - lanh manh ((cuu phuong) OR (thu phuong)) ((cong tinh) or (long tinh)) thanh dau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sang - lanh manh ((cuu phuong) OR (thu phuong)) ((cong tinh) OR (long tinh)) thanh dau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu sang - lanh manh ((cuu phuong) OR (thu phuong)) ((cong tinh) or (long tinh)) thanh dau".
• Adding a wildcard symbol may retrieve word variants: hoc thieu sang - lanh manh ((cuu phuong) OR (thu phuong)) ((cong tinh) or (long tinh)) thanh dau*.