Perhaps you should try some spelling variations:
cong thanh » dong thanh, cong trinh, cong tan
hoc chieu » hoc thieu, hoc hien, hoc dieu
cong than » cong thang, cong tan, cong thai
ho chieu » theo chieu, hoc thieu, doi chieu
tranh va » tranh van, trang va, trinh va
phan cau » phan dau, phan cac, phan tu
va dung » van dung, va duong, vat dung

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc chieu) or (ho chieu)) tinh - canh tranh va dung ((cong than) OR (cong thanh)) phan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc chieu) OR (ho chieu)) tinh - canh tranh va dung ((cong than) OR (cong thanh)) phan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc chieu) or (ho chieu)) tinh - canh tranh va dung ((cong than) OR (cong thanh)) phan cau".
• Adding a wildcard symbol may retrieve word variants: ((hoc chieu) or (ho chieu)) tinh - canh tranh va dung ((cong than) OR (cong thanh)) phan cau*.