Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khi mo tong snippets" » "khi mo trong snippets", "khi mo rong snippets", "khi mo nong snippets", "khai mo tong snippets", "khi moi tong snippets", "thi mo tong 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: (((("khi 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: (((("khi mo tong snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khi mo tong snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khi mo tong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.