Perhaps you should try some spelling variations:
thieu khang » chieu khong, thieu quang
thieu sang » chieu sang, thieu quang, hieu lang
cuu phuong » cac phuong, thu phuong
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
manh cuu » manh cua, mang cua, dinh cuu

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