Perhaps you should try some spelling variations:
nganh khoa » nganh hoa, nganh khong, doanh khoa
hoc nganh » hoc nhanh
nhan tai » hang tai, van tai, toan tai
cam nhan » ca nhan, cam chan, cam nang
khoa hoc » hoa hoc
long hoc » dong hoc, long soc, long thuoc
cuu long » cuu cong, cuu tong, cuu nang
dai tai » dai hai, dai thao
voi cam » voi cac, voi nam, voi can
doi tap » doi tac, doi dap, doi tai
tu sach » thu sach, su sach, te sach
hoc xa » hoc ma
xa voi » xa hoi, ba voi, da voi

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 ((doi tap) or (dai tai)), nghien cuu long hoc nganh khoa hoc xa voi cam nhan tai~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((doi tap) OR (dai tai)), nghien cuu long hoc nganh khoa hoc xa voi cam nhan tai.
• Adding a wildcard symbol may retrieve word variants: tu sach ((doi tap) or (dai tai)), nghien cuu long hoc nganh khoa hoc xa voi cam nhan tai*.