Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"ton van che snippets" » "tong van che snippets", "toan van che snippets", "tan van che snippets", "ton han che snippets", "ton van chi snippets", "ton van cho 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: (((("ton van che snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("ton van che snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( ton van che snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("ton van che snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.