Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nho tac den snippets" » "nho tai den snippets", "tho tac den snippets", "nhom tay den snippets", "nho tac de snippets", "nho tat den snippets", "nho thai den 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: (((("nho tac den snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nho tac den snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nho tac den snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nho tac den snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.