Perhaps you should try some spelling variations:
nhanh khoa » nhan khoa, nganh khoa, hang khoa
phong dieu » thong dieu, nhung dieu, trong dieu
goc nhanh » hoc nhanh, doc nhanh, goc nhan
van phong » van dong, hai phong
khoa hoc » hoa hoc
te sach » toc sach
dai tan » dai han, hai tan, dai tai
cuu mot » cua mot, cuu mo, huu mot
hoi van » hoi va, hoi dan, hai van
do dap » doi dap, do dai, do dac
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: te sach ((dai tan) or (do dap)), nghien cuu mot goc nhanh khoa hoc ma hoi van phong dieu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((dai tan) OR (do dap)), nghien cuu mot goc nhanh khoa hoc ma hoi van phong dieu.
• Adding a wildcard symbol may retrieve word variants: te sach ((dai tan) or (do dap)), nghien cuu mot goc nhanh khoa hoc ma hoi van phong dieu*.