Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"han dieu so snippets" » "nhan dieu so snippets", "than dieu so snippets", "lan dieu so snippets", "han hieu so snippets", "han lieu so snippets", "han dieu co 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: (((("han dieu so snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("han dieu so snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( han dieu so snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("han dieu so snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.