Perhaps you should try some spelling variations:
thong tinh » thuong tinh, thong tin, thong minh
hieu manh » chieu xanh, hieu nganh, dieu hanh
hanh tung » thanh tung, manh tung, hanh dung
cua thong » cua thuong, cua khong, cua tong
hoc hieu » hoc thieu, hoc hien, doc hieu
anh dong » anh huong, anh son
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 hieu manh - ((hanh tung) or (anh dong)) cua thong thong tinh toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hieu manh - ((hanh tung) OR (anh dong)) cua thong thong tinh toan cau*.