Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khai mo tong snippets" » "khac mo tong snippets", "khi mo tong snippets", "khai bao tong snippets", "khai mo trong snippets", "khai mo rong snippets", "khai mo nong 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: (((("khai mo tong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("khai mo tong snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khai mo tong snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khai mo tong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.