Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"don va cau snippets" » "doan va cau snippets", "dong va cau snippets", "don vi cau snippets", "don van cau snippets", "don va cac snippets", "don va dau 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: (((("don va cau snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("don va cau snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( don va cau snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("don va cau snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.