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