Perhaps you should try some spelling variations:
khoan phan » khoan phai, khoan thanh, hoa phan
phan thong » phan thuong, phan hong, phan tong
phau thong » phap thong, khau thong, phan thuong
sach tien » sach tren
tien thuc » trien thuc, kien thuc, bien thuc
thuc sach » thuoc sach, thu sach, thuc cach
thieu tu » thien tu, chieu tu, thieu cua
nha phau » nha phat, nhap khau, khoa phau
su sach » so sach, vu sach
tu sach » thu sach, te sach, tu cach

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( su sach thieu tu cac khoan phan thong ) or ( tu sach tien thuc sach nha phau thong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( su sach thieu tu cac khoan phan thong ) OR ( tu sach tien thuc sach nha phau thong )).
• Adding a wildcard symbol may retrieve word variants: (( su sach thieu tu cac khoan phan thong ) or ( tu sach tien thuc sach nha phau thong ))*.