Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cha tinh do snippets" » "chau tinh do snippets", "cham tinh do snippets", "chai tinh do snippets", "cha trinh do snippets", "cha tinh doi snippets", "cha tinh da 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: (((("cha tinh do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cha tinh do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cha tinh do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cha tinh do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.