Perhaps you should try some spelling variations:
"phap luan - dan van can bo" » "phap luat - dan van can bo" (Expand Search), "phap quan - dan van can bo" (Expand Search), "phap luan - dang van can bo" (Expand Search), "phap luan - san van can bo" (Expand Search), "phap luan - tan van can bo" (Expand Search), "phap luan - dan van ban bo" (Expand Search), "phap luan - dan van dan bo" (Expand Search), "phap luan - dan van hanh bo" (Expand Search)
"phap luan - doan van can bo" » "phap luat - doan van can bo" (Expand Search), "phap quan - doan van can bo" (Expand Search), "phap luan - doan phan can bo" (Expand Search), "phap luan - luan van can bo" (Expand Search), "phap luan - san van can bo" (Expand Search), "phap luan - doan van ban bo" (Expand Search), "phap luan - doan van dan bo" (Expand Search), "phap luan - doan van hanh bo" (Expand Search)

Try widening your search to All Fields.

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("phap luan - dan van can bo") OR ("phap luan - doan van can bo"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"phap luan - dan van can bo\") OR (\"phap luan - doan van can bo\"))".
• Removing quotes may allow a broader search: (( phap luan - dan van can bo ) OR ( phap luan - doan van can bo )).
• Adding a wildcard symbol may retrieve word variants: (("phap luan - dan van can bo") OR ("phap luan - doan van can bo"))*.