Perhaps you should try some spelling variations:
thuat nganh » thuat lanh, thuat canh, luat nganh
nganh khoa » nganh hoa, nganh khong, doanh khoa
khau thong » khau thuong, khap thong, khau tong
truoc cach » cuoc cach, thuc cach, truoc cang
phan thong » phan thuong, phan hong, phan tong
khoa khau » khoa kham, khoa phau, khoa chau
tri truoc » tri thuoc, tri thuc, gi truoc
cach hoan » cac khoan, hach toan, sach han
hoan phan » hoa phan, toan phan, doan phan
ki thuat » ky thuat
sach tri » sach tai, sach tren, sach truc
dinh ki » dinh vi, dinh li, dinh si
vu sach » vu bach, su sach, vu khach

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( do dinh ki thuat nganh khoa khau thong ) or ( vu sach tri truoc cach hoan phan thong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( do dinh ki thuat nganh khoa khau thong ) OR ( vu sach tri truoc cach hoan phan thong )).
• Adding a wildcard symbol may retrieve word variants: (( do dinh ki thuat nganh khoa khau thong ) or ( vu sach tri truoc cach hoan phan thong ))*.