Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khat su cao snippets" » "khat sua cao snippets", "khap su cao snippets", "achat su cao snippets", "khat cu cao snippets", "khat vu cao snippets", "khat su 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: (((("khat su cao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("khat su cao snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khat su cao snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khat su cao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.