Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
hanh trung » thanh trung, hanh trang, manh trung
doi chieu » doc hieu, doi chi, ho chieu
vap nhung » va nhung, ve nhung, voi nhung
thi nang » thi cong, ki nang, thi hanh
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
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 sang - hanh trung ((vap nhung) or (thi nang)) cong tac toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sang - hanh trung ((vap nhung) OR (thi nang)) cong tac toan cao*.