Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dang cac so snippets" » "dung cac so snippets", "bang cac so snippets", "dong cac so snippets", "dang cac co snippets", "dang cac bo snippets", "dang cac ho 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: (((("dang cac 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: (((("dang cac so snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dang cac so snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dang cac so snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.