Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"hoc dung oai snippets" » "hoc dung code snippets", "hoc ung oai snippets", "hoc dan oai snippets", "hoc cong oai snippets", "hoc dung hoai snippets", "hoc dung loai snippets", "hoc dung tai 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: (((("hoc dung oai snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hoc dung oai snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( hoc dung oai snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hoc dung oai snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.