Perhaps you should try some spelling variations:
thieu khang » chieu khong, thieu quang
thieu sang » chieu sang, thieu quang, hieu lang
canh doanh » hanh doanh, chinh doanh, doanh doanh
trinh toan » tinh toan, thanh toan, trinh han
cua thong » cua thuong, cua tong, suat thong
cua khong » hua khong, cua phuong, cua thuong
toan ban » van 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 (thieu khang)) - canh doanh ((cua thong) or (cua khong)) cong trinh toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu sang) OR (thieu khang)) - canh doanh ((cua thong) OR (cua khong)) cong trinh toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu sang) OR (thieu khang)) - canh doanh ((cua thong) or (cua khong)) cong trinh toan ban".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu sang) OR (thieu khang)) - canh doanh ((cua thong) or (cua khong)) cong trinh toan ban*.