Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"khu van tan snippets" » "khau van tan snippets", "khuc van tan snippets", "chu van tan snippets", "khu van tuan snippets", "khu van ban snippets", "khu van tai snippets"

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"khu van tan snippets\") OR (\"python using java snippets\"))) OR (\"locating bug core snippets\"))~".
• Removing quotes may allow a broader search: (((( khu van tan snippets ) OR ( python using java snippets ))) OR ( locating bug core snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("khu van tan snippets") OR ("python using java snippets"))) OR ("locating bug core snippets"))*.