Perhaps you should try some spelling variations:
cua truong » cua trung, xuan truong, cac truong
hien xanh » hien hanh, hien nhanh, chieu xanh
tranh cua » doanh cua, manh cua
tuong dan » huong dan, tung dan, xuong dan
dong san » cong san, dong bang, dong von
toan cau » toan cao, toan tap, toan tai
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: hoc hien xanh - canh tranh cua truong ((tuong dan) or (dong san)) ((toan cau) OR (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien xanh - canh tranh cua truong ((tuong dan) OR (dong san)) ((toan cau) OR (toan ban)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hien xanh - canh tranh cua truong ((tuong dan) or (dong san)) ((toan cau) OR (toan ban))".
• Adding a wildcard symbol may retrieve word variants: hoc hien xanh - canh tranh cua truong ((tuong dan) or (dong san)) ((toan cau) OR (toan ban))*.