Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hieu lang » chieu sang, hieu quang, nhieu tang
truong va » truong dai, truong cao, truong dao
trung va » trang va, trung ha, trung tam
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan tap » toan ban
ho hieu » ho chieu, hoi hieu, nho hieu

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 - thanh ((trung va) OR (truong va)) nhung cong tac toan tap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho hieu lang - thanh ((trung va) OR (truong va)) nhung cong tac toan tap".
• Adding a wildcard symbol may retrieve word variants: ho hieu lang - thanh ((trung va) OR (truong va)) nhung cong tac toan tap*.