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
canh ban » can ban, canh dan, doanh ban
canh van » anh van, can van, cach van
cong dan » cong san, cong tan, huong dan
toan tap » toan ban
han tap » han tai, nhan tai, nhan tao

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