Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
truc doanh » tri doanh, trai doanh, muc doanh
doanh khoa » toan khoa
phap thong » phap phong, phap chong, pho thong
phu thong » pho thong, khau thong, phan thong
sach tren » sach tien, sach tranh
tren truc » tren thuc, trang truc, trung truc
truc bich » truc bach, truc tinh
sach tri » sach tai, sach truc, sach bai
tri truc » tri thuc, thi truc, tri thuoc
khoa phu » khoa phau, khoa thu, hoa phu
bich han » bich ha, binh han, dich han
han phap » hanh phap, phan phap, ban phap
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: (( thuat sach tri truc doanh khoa phu thong ) OR ( su sach tren truc bich han phap thong ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( thuat sach tri truc doanh khoa phu thong ) OR ( su sach tren truc bich han phap thong ))".
• Adding a wildcard symbol may retrieve word variants: (( thuat sach tri truc doanh khoa phu thong ) OR ( su sach tren truc bich han phap thong ))*.