Perhaps you should try some spelling variations:
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 hach » thuc hanh, chuc hach, thuc cach
hach toan » thanh toan, manh toan
khoa cong » hoa cong, khoe cong, hoc cong
thuc bach » truc bach, thuc cach, thuoc sach
sach tai » sach bai, sach tham, sach xa
tai thuc » thai thuc, tri thuc, dai thuc
sach dao » lanh dao
dao thuc » dan thuc, dao tuc, do thuc
te sach » toc sach
su sach » so sach, vu sach

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( te sach tai thuc hach toan khoa cong ) or ( su sach dao thuc bach khong phap thong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( te sach tai thuc hach toan khoa cong ) OR ( su sach dao thuc bach khong phap thong )).
• Adding a wildcard symbol may retrieve word variants: (( te sach tai thuc hach toan khoa cong ) or ( su sach dao thuc bach khong phap thong ))*.