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