Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
trinh chat » tinh chat, trinh luat, trinh han
ngung cong » dung cong, nganh cong, nang cong
nguoi cong » nguoi muong, nguoi thong, nguoi nung
nhung cong » dung cong, thong cong, hang cong
hien xanh » hien hanh, hien nhanh, chieu xanh
dan chinh » dang chinh, lan chinh, van chinh
chinh can » chinh ca, chinh ban, chinh cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hien xanh - hanh trinh chat ((((ngung cong) OR (nguoi cong))) or (nhung cong)) dan chinh can~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien xanh - hanh trinh chat ((((ngung cong) OR (nguoi cong))) OR (nhung cong)) dan chinh can.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hien xanh - hanh trinh chat ((((ngung cong) OR (nguoi cong))) or (nhung cong)) dan chinh can".
• Adding a wildcard symbol may retrieve word variants: hoc hien xanh - hanh trinh chat ((((ngung cong) OR (nguoi cong))) or (nhung cong)) dan chinh can*.