Perhaps you should try some spelling variations:
thuat lanh » thuat lap, thuat san
thuc dang » thuoc dang, thuc dan, thuc dung
phan tong » phan trong, phan cong, han tong
lanh dung » anh dung, manh dung, lan dung
canh khoa » anh khoa, xanh khoa, doanh khoa
thu thang » thu trang, thu hang, thu thanh
sach tri » sach tai, sach tren, sach truc
tri thuc » tri tue
dung thu » ung thu, dung phu, dung thi
thu canh » thuc hanh, thu cong, thu ban
khoa thu » khoa than, hoai thu, ho thu
tu sach » thu sach, su sach, te sach
dang co » dong co, dung co, dang do

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 tri thuc dang co phan tong ) or ( thuat lanh dung thu canh khoa thu thang ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tu sach tri thuc dang co phan tong ) OR ( thuat lanh dung thu canh khoa thu thang )).
• Adding a wildcard symbol may retrieve word variants: (( tu sach tri thuc dang co phan tong ) or ( thuat lanh dung thu canh khoa thu thang ))*.