Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thu quoc cac snippets" » "phu quoc cac snippets", "tru quoc cac snippets", "thuat quoc cac snippets", "thu duoc cac snippets", "thu luoc cac snippets", "thu quoc cao 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: (((("thu quoc cac snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("thu quoc cac snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thu quoc cac snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thu quoc cac snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.