Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
hanh trinh » canh tranh
hieu manh » chieu xanh, hieu nganh, dieu hanh
cua thong » cua thuong, cua khong, cua tong
toc hieu » toc thieu, doc hieu, hoc thieu
tac than » tac thanh, tam than, bac thanh
tac nhan » tao nhan, cac nhan, dac nhan

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 trinh) or (hanh chinh)) cua thong cong ((tac than) or (tac nhan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc hieu manh - ((hanh trinh) OR (hanh chinh)) cua thong cong ((tac than) OR (tac nhan)) cau.
• Adding a wildcard symbol may retrieve word variants: toc hieu manh - ((hanh trinh) or (hanh chinh)) cua thong cong ((tac than) or (tac nhan)) cau*.