Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"web tuong so snippets" » "web huong so snippets", "ve tuong so snippets", "web song so snippets", "web tuong ho snippets", "web truong son snippets", "web cong so 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: (((("web tuong so snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("web tuong so snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( web tuong so snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("web tuong so snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.