Perhaps you should try some spelling variations:
phan thuong » hang thuong, phan xuong
thuat lanh » thuat lap, thuat san
phau thong » phap thong, khau thong, phan thong
thuc hach » thuc hanh, chuc hach, thuc cach
hach toan » thanh toan, manh toan
toan phan » thanh phan, toan ban, hoa phan
bai thuat » giai thuat, bai thuyet, ki thuat
sach tai » sach tham, sach dao, sach xa
tai thuc » thai thuc, tri thuc, dai thuc
sach bai » sach dao, cac bai, sach xa
lanh nha » lanh nham, hanh nha, lenh nha
nha phau » nha phat, nhap khau, khoa phau
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 tai thuc hach toan phan thuong ) or ( tu sach bai thuat lanh nha phau thong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( vu sach tai thuc hach toan phan thuong ) OR ( tu sach bai thuat lanh nha phau thong )).
• Adding a wildcard symbol may retrieve word variants: (( vu sach tai thuc hach toan phan thuong ) or ( tu sach bai thuat lanh nha phau thong ))*.