Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
hoc thieu » toc thieu, hoc hien
trung cua » truong cua, trung tuan, dung cua
trung cap » truong cao, trung tam
dang tinh » dang dinh, dang sinh, dang vinh
dong tin » thong tin, luong tin, dong kinh
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 - thanh ((trung cua) OR (trung cap)) nhung ((dang tinh) or (dong tin)) toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - thanh ((trung cua) OR (trung cap)) nhung ((dang tinh) OR (dong tin)) toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu xanh - thanh ((trung cua) OR (trung cap)) nhung ((dang tinh) or (dong tin)) toan cau".
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - thanh ((trung cua) OR (trung cap)) nhung ((dang tinh) or (dong tin)) toan cau*.