Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"hoc vat canh snippets" » "hoc vat code snippets", "hoc van canh snippets", "hoc vat cach snippets", "hoc luat canh snippets", "hoc va canh snippets", "hoc viet canh snippets", "thuc vat canh 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 vat canh 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 vat canh snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( hoc vat canh snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hoc vat canh snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.