Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dong hieu mo snippets" » "dung hieu mo snippets", "dong trieu mo snippets", "doc hieu mo snippets", "dong hieu moi snippets", "dong hieu mot snippets", "dong hieu 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: (((("dong hieu mo snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dong hieu mo snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dong hieu mo snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dong hieu mo snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.