Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nhap dan thi slippers" » "nhan dan thi slippers", "nhac dan thi slippers", "hap dan thi slippers", "nhap dang thi slippers", "nhap tran thi slippers", "nhap dinh thi slippers", "nhap dan thi slippery", "nhap dan thi grippers"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core 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: (((("nhap dan thi slippers") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nhap dan thi slippers") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nhap dan thi slippers ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nhap dan thi slippers") or ("python using java snippets"))) or ("locating bug code snippets"))*.