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
cong hoc » dong hoc, cong hoa, cong coc
cuu cong » cua cong, thu cong, cac cong
hoi tai » hoc tai, hoi trac
voi cam » voi cac, voi nam, voi can
doi tap » doi tac, doi dap, doi tai
so sach » so sanh, bo sach, co sach
hoc da » hoc dan, hoc dai, hoc dat
da voi » dao voi, dua voi, ba voi

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sach ((doi tap) or (hoi tai)), nghien cuu cong hoc nganh khoa hoc da voi cam nhan tai~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ((doi tap) OR (hoi tai)), nghien cuu cong hoc nganh khoa hoc da voi cam nhan tai.
• Adding a wildcard symbol may retrieve word variants: so sach ((doi tap) or (hoi tai)), nghien cuu cong hoc nganh khoa hoc da voi cam nhan tai*.