Perhaps you should try some spelling variations:
nhanh chong » thanh cong, khanh phong
luc nhanh » luc nhan, luc nganh, luc canh
chong hoc » chung hoc, chong doc, thong hoc
cuu tong » cuu cong, cuu tinh, huu tung
tong luc » dong luc, tong cuc, truong luc
hoi benh » hoc benh, hoa benh, hoi binh
nhan tai » hang tai, van tai, toan tai
tu mach » tu cach, tu manh, tu sach
tu hach » tu hanh, tu cach, tu sach
hoc xa » hoc ma

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu mach) OR (tu hach)) hoc tap, nghien cuu tong luc nhanh chong hoc xa hoi benh nhan tai~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu mach) OR (tu hach)) hoc tap, nghien cuu tong luc nhanh chong hoc xa hoi benh nhan tai".
• Adding a wildcard symbol may retrieve word variants: ((tu mach) OR (tu hach)) hoc tap, nghien cuu tong luc nhanh chong hoc xa hoi benh nhan tai*.