Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
thong cong » trong cong, tong cong, thong thong
hieu lang » chieu sang, hieu quang, nhieu tang
tang luan » dung luan
tang cua » mang cua, hang cua, thong cua
cong tan » cong tac, cong san, cong thanh
tan than » tan thanh, tan tran, ban than
than cau » toan cau, phan cau, than cap

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) or (hieu lang)) - hanh ((tang cua) or (tang luan)) thong cong tan than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu tinh) OR (hieu lang)) - hanh ((tang cua) OR (tang luan)) thong cong tan than cau.
• Adding a wildcard symbol may retrieve word variants: ho ((chieu tinh) or (hieu lang)) - hanh ((tang cua) or (tang luan)) thong cong tan than cau*.