Perhaps you should try some spelling variations:
phan thuong » hang thuong, phan xuong
thuat mach » thuat sach, thuat tach, thuyet mach
dai thuat » dai thua, giai thuat, ki thuat
phan tong » phan trong, phan cong, han tong
cac thanh » bac thanh, ban thanh, cuu thanh
sach dai » sach dao, sach bai, sach dat
thuy anh » thuy linh
kco phan » cho phan, so phan, do phan
tu sach » thu sach, su sach, te sach
mach co » mach cao, mach so, mach o
hoc cac » hoc cao
anh kco » anh co, anh khoa, banh keo

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 dai thuat mach co phan tong ) or ( hoc cac thanh thuy anh kco phan thuong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tu sach dai thuat mach co phan tong ) OR ( hoc cac thanh thuy anh kco phan thuong )).
• Adding a wildcard symbol may retrieve word variants: (( tu sach dai thuat mach co phan tong ) or ( hoc cac thanh thuy anh kco phan thuong ))*.