Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"mao can moi snippets" » "mao van moi snippets", "mao con moi snippets", "mat can moi snippets", "mao ban moi snippets", "mao cac moi snippets", "mao chat moi 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: (((("mao can moi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("mao can moi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( mao can moi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("mao can moi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.