Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dong bach he snippets" » "dong bac he snippets", "dong cach he snippets", "song bach he snippets", "dong bach hue snippets", "dong bach ha snippets", "dong bach nhu 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 bach he 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 bach he snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dong bach he snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dong bach he snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.