Perhaps you should try some spelling variations:
phan xuong » phan cong
bach khong » bach khang, bach phuong, bach khoa
khong phap » chong phap, khong phai, phuong phap
phap thong » phap phong, phap chong, pho thong
thuc hang » thuc hanh, thu hang, phuc hang
tham thuc » nham thuc, pham thuc, tam thuc
thuc bach » truc bach, thuc cach, thuoc sach
sach tai » sach bai, sach tham, sach dao
tai thuc » thai thuc, tri thuc, dai thuc
hang hoa » hang khoa, thanh hoa, hang va
hoa phan » hoa dan, co phan
goc tham » goc kham, ngoc them, hoac tham
tu sach » thu sach, su sach, te sach
tu goc » tu hoc

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( tu sach tai thuc hang hoa phan xuong ) or ( tu goc tham thuc bach khong phap thong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tu sach tai thuc hang hoa phan xuong ) OR ( tu goc tham thuc bach khong phap thong )).
• Adding a wildcard symbol may retrieve word variants: (( tu sach tai thuc hang hoa phan xuong ) or ( tu goc tham thuc bach khong phap thong ))*.