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