Perhaps you should try some spelling variations:
hoc khanh » hoc nhanh, hoc thanh, hoc hanh
khanh hoa » thanh hoa, hang hoa
cuu tong » cuu cong, cuu tinh, huu tung
tong hoc » tuong hoc, thong hoc, trong hoc
doi nhan » doi khang, tri nhan, hoi nhap
cac hoc » cach hoc, cac hop, bac hoc
do nhan » do nhat, de nhan, do phan
su cac » tu cac, su cao, su can

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

• Performing a fuzzy search may retrieve terms with similar spellings: su cac hoc tap, nghien cuu tong hoc khanh hoa hoc ma hoa ((do nhan) OR (doi nhan)) van~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su cac hoc tap, nghien cuu tong hoc khanh hoa hoc ma hoa ((do nhan) OR (doi nhan)) van".
• Adding a wildcard symbol may retrieve word variants: su cac hoc tap, nghien cuu tong hoc khanh hoa hoc ma hoa ((do nhan) OR (doi nhan)) van*.