Perhaps you should try some spelling variations:
than thuong » thanh thuong, phan thuong, han thuong
khach thi » khac thi, khach trai, quach thi
canh khoa » xanh khoa, doanh khoa, chinh khoa
pho thong » he thong
khoa than » khoa luan, hoa thai, hoa tan
vu khach » vu khanh, vu khac, vay khach
thu canh » thuc hanh, thu cong, thu ban
khoa pho » khoa phu, khoa khoa, khoa phau
sach tri » sach tai, sach tren, sach truc
tri tuan » tri quan, tran tuan, tri tue
anh khoa » doanh khoa, hang khoa
tu sach » thu sach, su sach, te sach

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (( vu khach thi thu canh khoa pho thong ) or ( tu sach tri tuan anh khoa than thuong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( vu khach thi thu canh khoa pho thong ) OR ( tu sach tri tuan anh khoa than thuong )).
• Adding a wildcard symbol may retrieve word variants: (( vu khach thi thu canh khoa pho thong ) or ( tu sach tri tuan anh khoa than thuong ))*.