Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"a tuan doi snippets" » "a tuan code snippets", "a truan doi snippets", "a quan doi snippets", "a luan doi snippets", "ba tuan doi snippets", "ta tuan doi snippets", "va tuan doi snippets"
"python using java snippets" » "python using data snippets"

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: (((("a tuan doi snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("a tuan doi snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( a tuan doi snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("a tuan doi snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.