Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thu quoc doc snippets" » "phu quoc doc snippets", "tru quoc doc snippets", "thuat quoc doc snippets", "thu quoc hoc snippets", "thu duoc duoc snippets", "thu quoc dong 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 doc 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 doc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thu quoc doc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thu quoc doc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.