Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"dao cac doi snippets" » "dao cac code snippets", "do cac doi snippets", "sao cac doi snippets", "tao cac doi snippets", "dao cac dai snippets", "dao cac toi snippets", "dao cau 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: (((("dao cac 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: (((("dao cac doi snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( dao cac doi snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dao cac doi snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.