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
hung van » phung van, nhung van, dung van
cong dan » cong san, cong tan, huong dan
toan ban » van ban
hung va » huong va, hang va, dung va

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 - manh ((hung va) or (hung van)) nhung cong dan ((toan tap) OR (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu sang - manh ((hung va) OR (hung van)) nhung cong dan ((toan tap) OR (toan ban)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc chieu sang - manh ((hung va) or (hung van)) nhung cong dan ((toan tap) OR (toan ban))".
• Adding a wildcard symbol may retrieve word variants: hoc chieu sang - manh ((hung va) or (hung van)) nhung cong dan ((toan tap) OR (toan ban))*.