Perhaps you should try some spelling variations:
thanh trung » thanh tung
thieu sang » chieu sang, thieu khang, thieu quang
trung tuan » trung thanh, trung tam, tran tuan
hoc thieu » toc thieu, hoc hien
tuan dung » tuan duong, tran dung, tan dung
cong tap » cuong tap, cong tan, tong tap
cong tac » cong ty
toan cau » toan cao, toan ban, toan tap

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 - thanh trung tuan dung ((cong tap) OR (cong tac)) toan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu sang - thanh trung tuan dung ((cong tap) OR (cong tac)) toan cau".
• Adding a wildcard symbol may retrieve word variants: hoc thieu sang - thanh trung tuan dung ((cong tap) OR (cong tac)) toan cau*.