Perhaps you should try some spelling variations:
hieu manh » chieu xanh, hieu nganh, dieu hanh
doanh cua » doanh luan
trinh han » trinh quan
dung cong » dung trong
toc hieu » toc thieu, doc hieu, hoc thieu
tinh cua » trinh cua, sinh cua, tinh chat
cong tan » cong tac, cong san, cong thanh
tran tap » toan tap, tran tan, tran tuan

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc hieu manh - hanh ((((tinh cua) or (doanh cua))) or (trinh han)) dung cong tan tran tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc hieu manh - hanh ((((tinh cua) OR (doanh cua))) OR (trinh han)) dung cong tan tran tap.
• Adding a wildcard symbol may retrieve word variants: toc hieu manh - hanh ((((tinh cua) or (doanh cua))) or (trinh han)) dung cong tan tran tap*.