Perhaps you should try some spelling variations:
dong thuoc » dung thuoc, dang thuoc, don thuoc
hoc nganh » hoc nhanh
thong hoa » thong khoa, thong ha, thong hoc
sach hoc » cach hoc, sach hoi, mach hoc
tan nhan » tran nhan, tao nhan, van nhan
nhan van » nhan dan, nhan va, phan van
vu sach » vu bach, su sach, vu khach
cuu mot » cua mot, cuu mo, huu mot
mot hoc » mon hoc, mo hoc, mot goc
hai tan » hai van, hai quan
xa hai » xa thai, xua hai, xa hoi

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach hoc tap, nghien cuu mot hoc nganh ((dong thuoc) or (thong hoa)) xa hai tan nhan van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach hoc tap, nghien cuu mot hoc nganh ((dong thuoc) OR (thong hoa)) xa hai tan nhan van.
• Adding a wildcard symbol may retrieve word variants: vu sach hoc tap, nghien cuu mot hoc nganh ((dong thuoc) or (thong hoa)) xa hai tan nhan van*.