Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dong tien da snippets" » "duong tien da snippets", "dong tin da snippets", "dong dien da snippets", "dong tien dam snippets", "dong tien dat snippets", "dong tien dua 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 tien da 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 tien da snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dong tien da snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dong tien da snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.