Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien danh
thong tinh » thuong tinh, thong tin, thong minh
thien anh » thien danh, tien anh, thien thanh
hanh tung » thanh tung, manh tung, hanh dung
cua thong » cua thuong, cua khong, cua tong
anh tang » anh bang, anh dang, anh nang
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) OR (thien anh)) - ((hanh tung) or (anh tang)) cua thong thong tinh toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu xanh) OR (thien anh)) - ((hanh tung) OR (anh tang)) cua thong thong tinh toan cau*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu xanh) OR (thien anh)) - ((hanh tung) or (anh tang)) cua thong thong tinh toan cau*".