Perhaps you should try some spelling variations:
hieu lang » chieu sang, hieu quang, nhieu tang
trung cap » truong cao
dung cong » dung trong
cong danh » cuong danh, cong dan, cong thanh
danh toan » manh toan, anh toan, dan toan
hoc hieu » hoc thieu, hoc hien, doc hieu
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hieu lang - thanh ((trung cap) OR (trung tam)) dung cong danh toan ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hieu lang - thanh ((trung cap) OR (trung tam)) dung cong danh toan ban".
• Adding a wildcard symbol may retrieve word variants: hoc hieu lang - thanh ((trung cap) OR (trung tam)) dung cong danh toan ban*.