Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"van phu che snippets" » "san phu che snippets", "van phung che snippets", "van phan che snippets", "van pha che snippets", "van phu chu snippets", "van phap che 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: (((("van phu 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: (((("van phu che snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( van phu che snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("van phu che snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.