Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hien manh » hien hanh, tien manh, hieu manh
long cua » luong cua, dong cua, song cua
cong cua » dong cua, huong cua, thong cua
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan cao » toan ban, toan tap
cong cu » chung cu

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 manh - nhanh ((long cua) or (((cong cua) or (cong cu)))) nhung cong tac toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien manh - nhanh ((long cua) OR (((cong cua) OR (cong cu)))) nhung cong tac toan cao.
• Adding a wildcard symbol may retrieve word variants: hoc hien manh - nhanh ((long cua) or (((cong cua) or (cong cu)))) nhung cong tac toan cao*.