Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
nuoc sach » nguoi sach, hoc sach, cuoc cach
hang khoa » dung khoa
hoc hang » hoc hanh, hoc bang, hoc tang
khoa hoc » hoa hoc
nhan van » nhan dan, nhan va, phan van
va nhan » van nhan, ca nhan, va phan
mo hoc » mon hoc, co hoc
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: ((thuat sach) or (nuoc sach)) hoc tap, nghien cuu mo hoc hang khoa hoc xa hoi va nhan van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thuat sach) OR (nuoc sach)) hoc tap, nghien cuu mo hoc hang khoa hoc xa hoi va nhan van.
• Adding a wildcard symbol may retrieve word variants: ((thuat sach) or (nuoc sach)) hoc tap, nghien cuu mo hoc hang khoa hoc xa hoi va nhan van*.