Perhaps you should try some spelling variations:
hanh truong » hanh trong, anh truong, manh truong
hieu nganh » vien nganh, hiem ngan, nghiep nganh
truong cua » truong ca, truong quan, truong cao
thong cong » trong cong, tong cong, thong thong
hieu manh » chieu xanh, dieu hanh, hien hanh
cua thong » cua thuong, cua khong, cua tong
tap toan » tap doan, tap quan, bai toan

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) or (hieu nganh)) - hanh truong cua thong cong ((tap toan) or (bai tap)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hieu manh) OR (hieu nganh)) - hanh truong cua thong cong ((tap toan) OR (bai tap)) cao.
• Adding a wildcard symbol may retrieve word variants: hoc ((hieu manh) or (hieu nganh)) - hanh truong cua thong cong ((tap toan) or (bai tap)) cao*.