Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"sach tet doi snippets" » "sach tet code snippets", "sach tien doi snippets", "sach tren doi snippets", "sach viet doi snippets", "sach te doi snippets", "sach theo doi snippets", "sach tiep doi 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: (((("python using java snippets") or ("sach tet doi snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using java snippets") OR ("sach tet doi snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( python using java snippets ) or ( sach tet doi snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("sach tet doi snippets"))) or ("locating bug core snippets"))*.