Perhaps you should try some spelling variations:
thanh tuong » thanh thuong, thanh tung, thanh huong
chieu sang » chieu sach, chieu xanh, hieu lang
cong thanh » dong thanh, cong trinh, cong tan
cong thong » cong thuong, cong trong, dong thong
ho chieu » theo chieu, hoc thieu, doi chieu
tuong va » truong va, thuong va, luong va
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 sang - thanh tuong va nhung ((cong thanh) or (cong thong)) than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sang - thanh tuong va nhung ((cong thanh) OR (cong thong)) than cau.
• Adding a wildcard symbol may retrieve word variants: ho chieu sang - thanh tuong va nhung ((cong thanh) or (cong thong)) than cau*.