Perhaps you should try some spelling variations:
lieu tinh » trieu tinh, bien tinh
tong cong » trong cong, cong cong, dung cong
tung cua » trung cua, tuong cua, tang cua
dung cua » dung luan, dung cho
cong dan » cong san, cong tan, huong dan
dan chan » dan gian, dan ca, van chat
chan cau » phan cau, can cau, chinh cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((lieu tinh) or (diep tinh)) - thanh ((tung cua) or (dung cua)) tong cong dan chan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((lieu tinh) OR (diep tinh)) - thanh ((tung cua) OR (dung cua)) tong cong dan chan cau.
• Adding a wildcard symbol may retrieve word variants: hoc ((lieu tinh) or (diep tinh)) - thanh ((tung cua) or (dung cua)) tong cong dan chan cau*.