Perhaps you should try some spelling variations:
nganh khoa » nganh hoa, nganh khong, doanh khoa
coc nganh » hoc nganh, cac nganh, chuc nganh
nhan tai » hang tai, van tai, toan tai
cam nhan » ca nhan, cam chan, cam nang
khoa hoc » hoa hoc
cong coc » cong cuoc, cong cac, cong co
cuu cong » cua cong, thu cong, cac cong
doi tai » hoi tai, dai tai, moi tai
voi cam » voi cac, voi nam, voi can
doi tac » dong tac
vu sach » vu bach, su sach, vu khach
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: vu sach ((doi tac) or (doi tai)), nghien cuu cong coc nganh khoa hoc da voi cam nhan tai~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ((doi tac) OR (doi tai)), nghien cuu cong coc nganh khoa hoc da voi cam nhan tai.
• Adding a wildcard symbol may retrieve word variants: vu sach ((doi tac) or (doi tai)), nghien cuu cong coc nganh khoa hoc da voi cam nhan tai*.