Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dai dieu can snippets" » "da dieu can snippets", "dai bieu can snippets", "dai dien can snippets", "dai dieu hanh snippets", "dai tiep can snippets", "dai dieu cua 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: (((("dai dieu can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dai dieu can snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dai dieu can snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dai dieu can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.