Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hanh trinh » canh tranh
hieu xanh » chieu xanh, hieu manh, hieu nganh
cua nhung » va nhung
thanh lap » thanh san, phan lap, thanh hai
doc hieu » toc thieu, hoc thieu, hoc hien
cong tac » cong ty
khan cap » khan ap, than cap, khoan cam

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

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