Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
nghien cac » nghiep cach, nghien cuu, nghiep cay
nganh khoa » nganh hoa, nganh khong, doanh khoa
thanh toan » thanh hoa, thanh san, tinh toan
hoc nganh » hoc nhanh
cac cong » cua cong
cong hoc » dong hoc, cong hoa, cong coc
khoa hoc » hoa hoc
va thanh » gia thanh, ban thanh, va tinh
tu sach » thu sach, su sach, te sach
ma hoi » mai hoi, xa hoi, ma 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) or (tu sach)) hoc tap, nghien cac cong hoc nganh khoa hoc ma hoi va thanh toan~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thuat sach) OR (tu sach)) hoc tap, nghien cac cong hoc nganh khoa hoc ma hoi va thanh toan.
• Adding a wildcard symbol may retrieve word variants: ((thuat sach) or (tu sach)) hoc tap, nghien cac cong hoc nganh khoa hoc ma hoi va thanh toan*.