Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"doc vi hoan snippets" » "doc vu hoan snippets", "doc va hoan snippets", "doc vi toan snippets", "hoc vi hoan snippets", "don vi hoan 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: (((("doc vi hoan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("doc vi hoan snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( doc vi hoan snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doc vi hoan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.