Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
hanh trang » thanh trung, canh tranh, minh trang
hieu xanh » chieu xanh, hieu manh, hieu nganh
dung cong » dung trong
san chinh » lan chinh, van chinh, ban chinh
chinh cau » chinh chau, chinh ca, chinh can
doc hieu » toc thieu, hoc thieu, hoc hien
cua dung » cua dang, cua dong, qua dung
cong san » cong tac

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 trang) OR (hanh trinh)) cua dung cong san chinh cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc hieu xanh - ((hanh trang) OR (hanh trinh)) cua dung cong san chinh cau".
• Adding a wildcard symbol may retrieve word variants: doc hieu xanh - ((hanh trang) OR (hanh trinh)) cua dung cong san chinh cau*.