Perhaps you should try some spelling variations:
khau thong » khau thuong, khap thong, khau tong
phan thong » phan thuong, phan hong, phan tong
thuc hach » thuc hanh, chuc hach, thuc cach
hach toan » thanh toan, manh toan
toan phan » thanh phan, toan ban, hoa phan
thuc sach » thuoc sach, thu sach, thuc cach
sach tri » sach tai, sach tren, sach truc
tri thuc » tri tue
sach bai » sach dao, cac bai, sach xa
bai thuc » bai thuoc, bao thuc, dai thuc
nha khau » nhap khau, nha kham, nha khach
vu sach » vu bach, su sach, vu khach
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 sach tri thuc hach toan phan thong ) or ( tu sach bai thuc sach nha khau thong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( vu sach tri thuc hach toan phan thong ) OR ( tu sach bai thuc sach nha khau thong )).
• Adding a wildcard symbol may retrieve word variants: (( vu sach tri thuc hach toan phan thong ) or ( tu sach bai thuc sach nha khau thong ))*.