Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
hieu lang » chieu sang, hieu quang, nhieu tang
dung cong » dung trong
cong tinh » cong trinh, cong vinh, long tinh
toan tap » toan ban
ban qua » ban quan, ban cua, ban quy
ban sua » ban cua, ban quan

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 lang) or (chieu xanh)) - hang ((ban qua) or (ban sua)) dung cong tinh toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((hieu lang) OR (chieu xanh)) - hang ((ban qua) OR (ban sua)) dung cong tinh toan tap.
• Adding a wildcard symbol may retrieve word variants: ho ((hieu lang) or (chieu xanh)) - hang ((ban qua) or (ban sua)) dung cong tinh toan tap*.