Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"qua trien do snippets" » "qua truyen do snippets", "qua trinh do snippets", "qua tieu do snippets", "qua trien dot snippets", "qua tien do snippets", "qua trien du 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: (((("qua trien do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("qua trien do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( qua trien do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("qua trien do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.