Perhaps you should try some spelling variations:
thanh trung » thanh tung
hanh trinh » canh tranh, hanh chinh
nhung cong » dung cong, thong cong, hang cong
hieu xanh » chieu xanh, hieu manh, hieu nganh
cua nhung » va nhung
doc hieu » toc thieu, hoc thieu, hoc hien
cong ban » cong bang, cong san, cong tan
toan cao » toan tap
toan ban » van ban

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 (thanh trung)) cua nhung cong ban ((toan cao) OR (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu xanh - ((hanh trinh) OR (thanh trung)) cua nhung cong ban ((toan cao) OR (toan ban)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc hieu xanh - ((hanh trinh) or (thanh trung)) cua nhung cong ban ((toan cao) OR (toan ban))".
• Adding a wildcard symbol may retrieve word variants: doc hieu xanh - ((hanh trinh) or (thanh trung)) cua nhung cong ban ((toan cao) OR (toan ban))*.