Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
tuong voi » tuong vo, tuong ho, tuong lai
cong hach » cong sach, cong thanh, cong khanh
hach toan » thanh toan, manh toan
chi sang » chi lang, chieu sang, chi chang
tung voi » dung voi, nhung voi, dung von
toan tap » toan ban
doi chi » doi khi

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi chi sang - thanh ((tung voi) or (tuong voi)) nhung cong hach toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chi sang - thanh ((tung voi) OR (tuong voi)) nhung cong hach toan tap.
• Adding a wildcard symbol may retrieve word variants: doi chi sang - thanh ((tung voi) or (tuong voi)) nhung cong hach toan tap*.