Perhaps you should try some spelling variations:
thanh phuong » thanh huong, thanh chuong, khanh phong
phuong thuc » thuong thuc
hoc thanh » hoc nhanh, hoan thanh, hoc phan
cao thanh » dao thanh, cho thanh, cac thanh
thanh van » thanh san, thanh toan, thanh phan
sach hoc » cach hoc, sach hoi, mach hoc
te sach » toc sach
cuu mot » cua mot, cuu mo, huu mot
mot hoc » mon hoc, mo hoc, mot goc
ma hoi » mai hoi, xa hoi, me hoi

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 hoc tap, nghien cuu mot hoc thanh phuong thuc ((ma hoi) or (ma hoa)) cao thanh van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach hoc tap, nghien cuu mot hoc thanh phuong thuc ((ma hoi) OR (ma hoa)) cao thanh van.
• Adding a wildcard symbol may retrieve word variants: te sach hoc tap, nghien cuu mot hoc thanh phuong thuc ((ma hoi) or (ma hoa)) cao thanh van*.