Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cot gia cua snippets" » "co gia cua snippets", "mot gia cua snippets", "con giap cua snippets", "cot gian cua snippets", "cot giau cua snippets", "cot gia cuc 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: (((("cot gia cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cot gia cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cot gia cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cot gia cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.