Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
chieu sang » chieu sach, chieu xanh, hieu lang
hoc chieu » hoc thieu, ho chieu, hoc hien
tang vatn » tang van, dang van, tan van
tang vat » tang van, dang vat, bang vat
cong dan » cong san, cong tan, huong dan
dan van » dang van, doan van, dao van

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 - hanh ((((tang vat) or (tang vatn))) or (hang va)) nhung cong dan van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu sang - hanh ((((tang vat) OR (tang vatn))) OR (hang va)) nhung cong dan van ban.
• Adding a wildcard symbol may retrieve word variants: hoc chieu sang - hanh ((((tang vat) or (tang vatn))) or (hang va)) nhung cong dan van ban*.