Perhaps you should try some spelling variations:
tcanh tranh » thanh thanh, can tranh, lanh tranh
hoang trong » khoang trong, hoang vuong, cong trong
chieu xanh » chieu sach, chieu sang, chieu tinh
trong quan » thong quan, tong quan, thong quang
hieu xanh » hieu manh, hieu nganh, dieu hanh
cua hoang » cua hang, quan hoang, tuan hoang
quan toan » quang toan, quan doan, xuan toan
toan cao » toan ban, toan tap

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) OR (chieu xanh)) - ((canh tranh) or (tcanh tranh)) cua hoang trong quan toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc ((hieu xanh) OR (chieu xanh)) - ((canh tranh) OR (tcanh tranh)) cua hoang trong quan toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc ((hieu xanh) OR (chieu xanh)) - ((canh tranh) or (tcanh tranh)) cua hoang trong quan toan cao".
• Adding a wildcard symbol may retrieve word variants: doc ((hieu xanh) OR (chieu xanh)) - ((canh tranh) or (tcanh tranh)) cua hoang trong quan toan cao*.