Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khi moi so snippets" » "thi moi so snippets", "khi doi so snippets", "khi hoi so snippets", "khi mot so snippets", "khi moi co snippets", "khi noi so 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: (((("khi moi 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: (((("khi moi so snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khi moi so snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khi moi so snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.