Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
chieu sang » chieu sach, chieu xanh, hieu lang
hanh tang » hanh trang, anh tang, hanh mang
cua thong » cua thuong, cua khong, cua tong
thanh hai » thanh phan, thanh hoa, thanh san
khoan cam » khoa cam, khoan va, phan cam
ho chieu » theo chieu, hoc thieu, doi chieu
tang cua » mang cua, hang cua, tang luan
cong tac » cong ty
khan ap » khan cap, han ap, khan dam

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 - hanh tang cua thong cong tac ((thanh hai) or (((khoan cam) or (khan ap))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sang - hanh tang cua thong cong tac ((thanh hai) OR (((khoan cam) OR (khan ap)))).
• Adding a wildcard symbol may retrieve word variants: ho chieu sang - hanh tang cua thong cong tac ((thanh hai) or (((khoan cam) or (khan ap))))*.