Perhaps you should try some spelling variations:
"thu hoach truc nghiep than hoc" » "thu hoach trac nghiem than hoc", "thu hoach thuc nghiem than hoc", "thu hoach tac nghiep than hoc", "thu hoach truc nghiep thanh hoc", "thu hoach truc nghiep chan hoc", "thu hoach truc nghiep phan hoc", "thu hoc truc nghiep than hoc", "thu hoach thu nghiep than hoc", "thu sach truc nghiep than hoc", "thu hoach truc nghiep toan hoc", "thu hoach truc nghiep thai hoc", "thu hoach truc nghiep than doc"
"thu bach van nghe dai hoc" » "thi bach van nghe dai hoc", "thu sach van nghe dai hoc", "truc bach van nghe dai hoc", "thu bach dan nghe dai hoc", "thu cach van nghe dai hoc", "thu bach dang nghe dai hoc", "thu bach van nghe dan hoc", "thu bach van nghe di hoc", "thu bach van nghe hai hoc"

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: (("thu hoach truc nghiep than hoc") or ("thu bach van nghe dai hoc"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("thu hoach truc nghiep than hoc") OR ("thu bach van nghe dai hoc")).
• Removing quotes may allow a broader search: (( thu hoach truc nghiep than hoc ) or ( thu bach van nghe dai hoc )).
• Adding a wildcard symbol may retrieve word variants: (("thu hoach truc nghiep than hoc") or ("thu bach van nghe dai hoc"))*.