Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
danh nhan » doanh nhan, thanh nhan, benh nhan
sach hoc » cach hoc, sach hoi, mach hoc
cuu tong » cuu cong, huu tung, cuu nang
ngoc anh » ngu anh
hoc danh » hoc dan, hoc anh, hoc hanh
nhan tai » hang tai, van tai, toan tai
anh hoa » anh khoa, danh hoa, hanh hoa
hoc xa » hoc ma
xa hoc » xa hoi, va hoc, xa hoa

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuat sach hoc tap, nghien ((cuu tong) or (cuu tinh)) ngoc anh hoa hoc xa hoc danh nhan tai~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sach hoc tap, nghien ((cuu tong) OR (cuu tinh)) ngoc anh hoa hoc xa hoc danh nhan tai.
• Adding a wildcard symbol may retrieve word variants: thuat sach hoc tap, nghien ((cuu tong) or (cuu tinh)) ngoc anh hoa hoc xa hoc danh nhan tai*.