Perhaps you should try some spelling variations:
nhieu tang » chieu sang, hieu lang, nhiet nang
hanh trinh » hanh chinh
hop nhieu » hoc thieu, ho chieu, he nhieu
nong cong » cong cong, nang cong, dong cong
tong cong » trong cong, cong cong, dung cong
dan toan » van toan, dan than, manh toan
toan cao » toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: hop nhieu tang - ((canh tranh) or (hanh trinh)) cua ((nong cong) OR (tong cong)) dan toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hop nhieu tang - ((canh tranh) OR (hanh trinh)) cua ((nong cong) OR (tong cong)) dan toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hop nhieu tang - ((canh tranh) or (hanh trinh)) cua ((nong cong) OR (tong cong)) dan toan cao".
• Adding a wildcard symbol may retrieve word variants: hop nhieu tang - ((canh tranh) or (hanh trinh)) cua ((nong cong) OR (tong cong)) dan toan cao*.