Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
canh trinh » canh tranh, hanh trinh, canh tinh
trinh luan » trinh luat, trinh quan, trinh han
hoc thieu » toc thieu, hoc hien
dinh cong » dinh cuong, dinh hong, minh cong
dinh long » dinh luong, dinh hong, dinh lang
dan toan » van toan, dan than, manh toan
toan cau » 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: hoc thieu xanh - canh trinh luan ((dinh cong) OR (dinh long)) dan toan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu xanh - canh trinh luan ((dinh cong) OR (dinh long)) dan toan cau".
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - canh trinh luan ((dinh cong) OR (dinh long)) dan toan cau*.