Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"don bao cua snippets" » "dong bao cua snippets", "mon bao cua snippets", "dan bao cua snippets", "don ban cua snippets", "don bai cua snippets", "don bao lua snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core 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: (((("don bao cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("don bao cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( don bao cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("don bao cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.