Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hoc thieu » toc thieu
toan tuan » tran tuan, toan quan, toan luan
doan tuan » doan quan, doanh luan, doan quang
cong van » cong vang, cong san, song van
van than » van thanh, van thang, van tuan
than cau » toan cau, phan cau, than cap

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) OR (hoc hien)) xanh - thanh ((toan tuan) or (doan tuan)) nhung cong van than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc thieu) OR (hoc hien)) xanh - thanh ((toan tuan) OR (doan tuan)) nhung cong van than cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc thieu) OR (hoc hien)) xanh - thanh ((toan tuan) or (doan tuan)) nhung cong van than cau".
• Adding a wildcard symbol may retrieve word variants: ((hoc thieu) OR (hoc hien)) xanh - thanh ((toan tuan) or (doan tuan)) nhung cong van than cau*.