Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
chat thong » chat chong, chat phong, chat trong
hanh tinh » hanh trinh, nhanh tinh, thanh tinh
thong tan » thong than, thong tran, thong tin
ho chieu » theo chieu, hoc thieu, doi chieu
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: ho chieu tinh - hanh tinh chat thong thong tan ((toan cau) or (van ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu tinh - hanh tinh chat thong thong tan ((toan cau) OR (van ban)).
• Adding a wildcard symbol may retrieve word variants: ho chieu tinh - hanh tinh chat thong thong tan ((toan cau) or (van ban))*.