Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
thong cong » trong cong, tong cong, thong thong
trinh cua » trinh luat, trinh quan, trinh luan
tinh cua » sinh cua, tinh chat, tranh cua
cong san » cong tac
san toan » van toan, dan toan, 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: theo ((chieu tinh) or (cuu tinh)) - hanh ((trinh cua) OR (tinh cua)) thong cong san toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu tinh) OR (cuu tinh)) - hanh ((trinh cua) OR (tinh cua)) thong cong san toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chieu tinh) or (cuu tinh)) - hanh ((trinh cua) OR (tinh cua)) thong cong san toan cau".
• Adding a wildcard symbol may retrieve word variants: theo ((chieu tinh) or (cuu tinh)) - hanh ((trinh cua) OR (tinh cua)) thong cong san toan cau*.