Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"chuan ve cua snippets" » "chuan he cua snippets", "chuan va cua snippets", "chuan vn cua snippets", "chuan le cua snippets", "chuan de cua snippets", "chuan te cua 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: (((("chuan ve cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("chuan ve cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( chuan ve cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("chuan ve cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.