Perhaps you should try some spelling variations:
nhiet nang » nhiet dong, viet nang, nhieu tang
hanh trinh » hanh chinh
hop nhiet » hoc nhiet, hop nhieu, hoc thiet
dung cong » dung trong
cua dung » cua dang, cua dong, qua dung
cong van » cong vang, cong san, song van
toan tai » toan tap, doanh tai, toan cao
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: hop nhiet nang - ((hanh trinh) or (canh tranh)) cua dung cong van ((toan tai) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hop nhiet nang - ((hanh trinh) OR (canh tranh)) cua dung cong van ((toan tai) OR (toan ban)).
• Adding a wildcard symbol may retrieve word variants: hop nhiet nang - ((hanh trinh) or (canh tranh)) cua dung cong van ((toan tai) or (toan ban))*.