Perhaps you should try some spelling variations:
hanh trinh » hanh chinh
cong luong » cong thuong, nang luong, cong dong
hieu manh » chieu xanh, hieu nganh, dieu hanh
nhan tong » nhan trong, nhan thong, nhan tuong
tong cong » trong cong, cong cong, dung cong
luong van » luong va, duong van, luong vat
hoc hieu » hoc thieu, hoc hien, doc hieu

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 - ((hanh trinh) or (canh tranh)) nhan tong cong luong van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hieu manh - ((hanh trinh) OR (canh tranh)) nhan tong cong luong van ban.
• Adding a wildcard symbol may retrieve word variants: hoc hieu manh - ((hanh trinh) or (canh tranh)) nhan tong cong luong van ban*.