Perhaps you should try some spelling variations:
danh nhan » doanh nhan, thanh nhan, benh nhan
thu mach » thu sach, thuat mach, thu hoach
mach hoc » cach hoc, dich hoc, anh hoc
cuu dong » cuu cong, cuu long, luu dong
cuu tong » cuu cong, cuu tinh, huu tung
hoc hanh » hoc nhanh, hoc thanh, hoc anh
hanh hoa » thanh hoa, khanh hoa, hang hoa
hoi danh » hop danh, hoi dan, hoc danh
nhan tai » hang tai, van tai, toan tai
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: thu mach hoc tap, nghien ((cuu dong) or (cuu tong)) hoc hanh hoa hoc xa hoi danh nhan tai~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu mach hoc tap, nghien ((cuu dong) OR (cuu tong)) hoc hanh hoa hoc xa hoi danh nhan tai.
• Adding a wildcard symbol may retrieve word variants: thu mach hoc tap, nghien ((cuu dong) or (cuu tong)) hoc hanh hoa hoc xa hoi danh nhan tai*.