Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
canh trinh » canh tranh, hanh trinh, anh trinh
hoc thieu » toc thieu, hoc hien
canh tinh » hanh tinh, manh tinh, canh tranh
luan dinh » xuan dinh, luan kinh, luan danh
dinh cong » dinh cuong, dinh hong, dinh long
cong dan » cong san, cong tan, huong dan
toan cau » toan cao, toan ban, toan tai
toan tap » toan 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 thieu xanh - ((canh trinh) OR (canh tinh)) luan dinh cong dan ((toan cau) or (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - ((canh trinh) OR (canh tinh)) luan dinh cong dan ((toan cau) OR (toan tap)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu xanh - ((canh trinh) OR (canh tinh)) luan dinh cong dan ((toan cau) or (toan tap))".
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - ((canh trinh) OR (canh tinh)) luan dinh cong dan ((toan cau) or (toan tap))*.