Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
trinh suat » trinh quan, trinh luan, trinh san
thong cong » trong cong, tong cong, thong thong
trinh sat » trinh san, trinh sau, trinh sai
ho chieu » theo chieu, hoc thieu, doi chieu
cong tan » cong tac, cong san, cong thanh
tran tap » toan tap, tran tan, tran tuan

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 ((((trinh suat) or (trinh sat))) or (trinh luat)) thong cong tan tran tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sang - hanh ((((trinh suat) OR (trinh sat))) OR (trinh luat)) thong cong tan tran tap.
• Adding a wildcard symbol may retrieve word variants: ho chieu sang - hanh ((((trinh suat) or (trinh sat))) or (trinh luat)) thong cong tan tran tap*.