Perhaps you should try some spelling variations:
than thuong » thanh thuong, phan thuong, han thuong
hoach tren » hoach trong, hoach toan, hoc tren
tren thuc » trien thuc, tron thuc, trinh thuc
pho thong » he thong
sach tren » sach tien, sach tranh
lele hong » lele zhang, le hong
hong khoa » phong khoa, hang khoa, dong khoa
khoa than » khoa luan, hoa thai, hoa tan
thuc anh » thuc hanh, thuy anh, thu anh
anh khoa » doanh khoa, hang khoa
khoa pho » khoa phu, khoa khoa, khoa phau
su sach » so sach, vu sach

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 tren thuc anh khoa pho thong ) or ( su sach tren lele hong khoa than thuong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( thu hoach tren thuc anh khoa pho thong ) OR ( su sach tren lele hong khoa than thuong )).
• Adding a wildcard symbol may retrieve word variants: (( thu hoach tren thuc anh khoa pho thong ) or ( su sach tren lele hong khoa than thuong ))*.