Perhaps you should try some spelling variations:
hieu nganh » vien nganh, hiem ngan, hieu manh
quan trong » gian trong
hanh mang » nhanh mang, hanh trang, nhanh lang
mang quan » nang quan, tang quan, hang quan
hach toan » thanh toan, manh toan
hoc hieu » hoc thieu, hoc hien, doc hieu
tac toan » tap toan, tam toan, tich 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 nganh - hanh mang quan trong cong ((tac toan) or (hach toan)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hieu nganh - hanh mang quan trong cong ((tac toan) OR (hach toan)) cao.
• Adding a wildcard symbol may retrieve word variants: hoc hieu nganh - hanh mang quan trong cong ((tac toan) or (hach toan)) cao*.