Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"van duoc cua snippets" » "van duoc code snippets", "van duc cua snippets", "vat duoc cua snippets", "tan duoc cua snippets", "van duoc sua snippets", "van nuoc cua snippets", "van doc cua 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: (((("van duoc cua snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("van duoc cua snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( van duoc cua snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("van duoc cua snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.