Perhaps you should try some spelling variations:
hieu lang » chieu sang, hieu quang, nhieu tang
van hoang » van hoan, quan hoang, tran hoang
toc hieu » toc thieu, doc hieu, hoc thieu
dat hang » dat khanh, dat quang, tat thang
cong so » cong san, cong hoa
so phan » co phan, hoc phan, hoa phan
phan ba » phan bo, phan dau, phan lap

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc hieu lang - thanh cong ((dat hang) or (van hoang)) cong so phan ba~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc hieu lang - thanh cong ((dat hang) OR (van hoang)) cong so phan ba.
• Adding a wildcard symbol may retrieve word variants: toc hieu lang - thanh cong ((dat hang) or (van hoang)) cong so phan ba*.