Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"mon vao cong snippets" » "mon va cong snippets", "mon cao cong snippets", "mon van cong snippets", "mon bao cong snippets", "moi vao cong 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: (((("mon vao cong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("mon vao cong snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( mon vao cong snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("mon vao cong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.