Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hieu manh » chieu xanh, hieu nganh, dieu hanh
hach toan » thanh toan, manh toan
hoc hieu » hoc thieu, hoc hien, doc hieu
mang cua » manh cua, dung cua, cong cua
tac toan » tap toan, tam toan, tich toan
ban cua » ban quan

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hieu manh - nhanh ((mang cua) or (ban cua)) nhung cong ((tac toan) or (hach toan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hieu manh - nhanh ((mang cua) OR (ban cua)) nhung cong ((tac toan) OR (hach toan)) cau.
• Adding a wildcard symbol may retrieve word variants: hoc hieu manh - nhanh ((mang cua) or (ban cua)) nhung cong ((tac toan) or (hach toan)) cau*.