Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
hien xanh » hien hanh, hien nhanh, chieu xanh
trinh cua » tinh cua, trinh luat, trinh quan
dung cong » dung trong
van thanh » ban thanh, van tuan
cua dung » cua dang, cua dong, qua dung
san tran » ban tran, dang tran, san trung

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