Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"doi trong ho snippets" » "doi tuong ho snippets", "dot trong ho snippets", "dong trong ho snippets", "doi trong tho snippets", "doi trong cho snippets", "doi trong hao 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: (((("doi trong ho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("doi trong ho snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( doi trong ho snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doi trong ho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.