Perhaps you should try some spelling variations:
thieu khang » chieu khong, thieu quang
trien quang » tran quang, tuyen quang, dien quang
thieu sang » chieu sang, thieu quang, hieu lang
thong cong » trong cong, tong cong, thong thong
tranh cua » doanh cua, manh cua
cua thong » cua thuong, cua khong, cua tong
cong doan » cong dan, cong hoan, dong doanh
doan phan » doanh phan, toan phan, dan phan
phan lap » phan dau

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))) or (trien quang)) - canh tranh cua thong cong doan phan lap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((((thieu sang) OR (thieu khang))) OR (trien quang)) - canh tranh cua thong cong doan phan lap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((((thieu sang) OR (thieu khang))) or (trien quang)) - canh tranh cua thong cong doan phan lap".
• Adding a wildcard symbol may retrieve word variants: hoc ((((thieu sang) OR (thieu khang))) or (trien quang)) - canh tranh cua thong cong doan phan lap*.