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
mach hoc » dich hoc, anh hoc, bac hoc
cach hoc » cach thuc, cach thoi, dich 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
benh va » benh ve, benh dai, benh tai
hoc xa » hoc ma
va tai » va tac, va tap

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