Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu tinh
chieu sang » chieu sach, hieu lang, nhieu tang
cang thang » cong thanh, dang thanh
hieu manh » hieu nganh, dieu hanh, hien hanh
hang cong » dang cong, hang nong, bang cong
thang ca » thang cua, hang ca, tang ca
cong tap » cuong tap, cong tac, cong tan
tap toan » tap doan, tap quan, bai toan
toan ban » van ban
ca hang » cua hang, ca chang, va hang

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 xanh) OR (chieu sang))) or (hieu manh)) - cang thang ca hang cong tap toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((((chieu xanh) OR (chieu sang))) OR (hieu manh)) - cang thang ca hang cong tap toan ban*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((((chieu xanh) OR (chieu sang))) or (hieu manh)) - cang thang ca hang cong tap toan ban*".