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