Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
nhung cong » dung cong, thong cong, hang cong
hieu manh » chieu xanh, hieu nganh, dieu hanh
trinh van » trinh han, trinh quan, trinh toan
trinh va » trinh vat, trinh ve, trinh vi
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: hoc ((chieu sang) or (hieu manh)) - hanh ((trinh va) or (trinh van)) nhung cong tac toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu sang) OR (hieu manh)) - hanh ((trinh va) OR (trinh van)) nhung cong tac toan cao.
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu sang) or (hieu manh)) - hanh ((trinh va) or (trinh van)) nhung cong tac toan cao*.