Perhaps you should try some spelling variations:
nhung cong » dung cong, hang cong, nhung don
thong cong » trong cong, tong cong, thong thong
toan thuc » toan hoc, nhan thuc
than phan » thanh phan, toan phan, thanh pham
hien anh » hien hanh, thien anh, dien anh
dan thuc » dan toc, am thuc
phan cac » nhan cach, 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: hoc hien anh - tinh ((toan thuc) or (dan thuc)) ((nhung cong) or (thong cong)) than phan cac~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien anh - tinh ((toan thuc) OR (dan thuc)) ((nhung cong) OR (thong cong)) than phan cac.
• Adding a wildcard symbol may retrieve word variants: hoc hien anh - tinh ((toan thuc) or (dan thuc)) ((nhung cong) or (thong cong)) than phan cac*.