Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
cong thang » cong thanh, cang thang, cong thong
thang phan » thanh phan, thong phan, than phan
hieu lang » chieu sang, hieu quang, nhieu tang
dung cong » dung trong
phan lua » phap lua, phan dua, phap luat
lua dung » qua dung, luan hung, qua duong
phan tap » phan lap, han tap, pha tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi ((hieu lang) OR (chieu tinh)) - co phan lua dung cong thang phan tap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi ((hieu lang) OR (chieu tinh)) - co phan lua dung cong thang phan tap".
• Adding a wildcard symbol may retrieve word variants: doi ((hieu lang) OR (chieu tinh)) - co phan lua dung cong thang phan tap*.