Perhaps you should try some spelling variations:
nhung cong » thong cong, hang cong, nhung don
hanh trinh » canh tranh, hanh chinh
trinh cua » tinh cua, trinh luat, trinh quan
dung cong » dung trong
van thanh » ban thanh, van tuan
chao chu » cho chu, cua chu, cao cho
chu xanh » chu manh, chieu xanh, chua xang

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

• Performing a fuzzy search may retrieve terms with similar spellings: chao chu xanh - hanh trinh cua ((nhung cong) OR (dung cong)) ((van thanh) or (tan tran)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: chao chu xanh - hanh trinh cua ((nhung cong) OR (dung cong)) ((van thanh) OR (tan tran)) cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "chao chu xanh - hanh trinh cua ((nhung cong) OR (dung cong)) ((van thanh) or (tan tran)) cao".
• Adding a wildcard symbol may retrieve word variants: chao chu xanh - hanh trinh cua ((nhung cong) OR (dung cong)) ((van thanh) or (tan tran)) cao*.