Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
hieu manh » chieu xanh, hieu nganh, dieu hanh
tong cong » trong cong, cong cong, dung cong
hanh san » thanh san, khach san, thanh son
cong dan » cong san, cong tan, huong dan
than tap » toan tap, phan tap, than cap
va tong » va thong, va tuong, va trong
han tap » han tai, toan tap, nhan tai
san va » san van, ban va, dan va

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((hieu manh) or (chieu sang)) - hanh san va tong cong dan ((than tap) OR (han tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((hieu manh) OR (chieu sang)) - hanh san va tong cong dan ((than tap) OR (han tap)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((hieu manh) or (chieu sang)) - hanh san va tong cong dan ((than tap) OR (han tap))".
• Adding a wildcard symbol may retrieve word variants: ho ((hieu manh) or (chieu sang)) - hanh san va tong cong dan ((than tap) OR (han tap))*.