Perhaps you should try some spelling variations:
cang thang » cong thanh, dang thanh
thang cua » thong cua, hang cua, than cua
bang cong » dang cong, bang song, hang cong
thi phap » theo phap, thi hai, thi hao
cua bang » chua bang, cua ban, cua dang
cong san » cong tac
toan tai » toan tap, doanh tai, toan ban
toan cao » toan ban, toan tap
thi ha » thi hai, thi hanh

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: ((thi phap) OR (thi ha)) sinh - cang thang cua bang cong san ((toan tai) OR (toan cao))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thi phap) OR (thi ha)) sinh - cang thang cua bang cong san ((toan tai) or (toan cao))~".
• Adding a wildcard symbol may retrieve word variants: ((thi phap) OR (thi ha)) sinh - cang thang cua bang cong san ((toan tai) or (toan cao))*.