Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"don va canh snippets" » "don van canh snippets", "don va cach snippets", "don ve canh snippets", "doan va canh snippets", "dong va canh snippets", "don vi canh 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 canh 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 canh snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( don va canh snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("don va canh snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.