Perhaps you should try some spelling variations:
nganh khoa » nganh hoa, nganh khong, doanh khoa
hoc nganh » hoc nhanh
van thanh » ban thanh, van tuan
thanh tai » thanh hai, thanh toan, doanh tai
sach hoc » cach hoc, sach hoi, mach hoc
khoa hoc » hoa hoc
tu sach » thu sach, su sach, te sach
cuu mon » cuu mo, cuu cong, cuu tong
cuu mot » cua mot, cuu mo, huu mot
hoi van » hoi va, hoi dan, hai van
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: tu sach hoc tap, nghien ((cuu mon) or (cuu mot)) hoc nganh khoa hoc xa hoi van thanh tai~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach hoc tap, nghien ((cuu mon) OR (cuu mot)) hoc nganh khoa hoc xa hoi van thanh tai.
• Adding a wildcard symbol may retrieve word variants: tu sach hoc tap, nghien ((cuu mon) or (cuu mot)) hoc nganh khoa hoc xa hoi van thanh tai*.