Perhaps you should try some spelling variations:
nhung cong » dung cong, hang cong, nhung don
thong cong » trong cong, tong cong, thong thong
trung hoa » trung hoc, trung ha
dan than » dan chan, ban than, van than
than tap » toan tap, han tap, phan tap
tung ho » tuong ho, trung hoc, tong hop
ho may » hoc may, hoa may, cho may

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho may tinh - manh ((tung ho) or (trung hoa)) ((nhung cong) or (thong cong)) dan than tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho may tinh - manh ((tung ho) OR (trung hoa)) ((nhung cong) OR (thong cong)) dan than tap.
• Adding a wildcard symbol may retrieve word variants: ho may tinh - manh ((tung ho) or (trung hoa)) ((nhung cong) or (thong cong)) dan than tap*.