Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
chieu tinh » trieu tinh, lieu tinh, chau tinh
doi chieu » doc hieu, doi chi, ho chieu
anh quang » anh xquang, anh quan, tinh quang
tinh lang » dinh lang, tinh sang, tinh bang
cua nhung » va nhung
cong tan » cong tac, cong san, cong thanh
tan toan » tan tran, tap toan, van 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: doi chieu tinh - ((((anh quang) OR (nhanh quang))) or (tinh lang)) cua nhung cong tan toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu tinh - ((((anh quang) OR (nhanh quang))) OR (tinh lang)) cua nhung cong tan toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu tinh - ((((anh quang) OR (nhanh quang))) or (tinh lang)) cua nhung cong tan toan cau".
• Adding a wildcard symbol may retrieve word variants: doi chieu tinh - ((((anh quang) OR (nhanh quang))) or (tinh lang)) cua nhung cong tan toan cau*.