Perhaps you should try some spelling variations:
nganh khoa » nganh hoa, nganh khong, doanh khoa
hoc nganh » hoc nhanh
doc sach » hoc sach, toc sach, nuoc sach
sach dao » lanh dao
khoa hoc » hoa hoc
phap dau » phan dau, phap day, pham dau
dao tap » dao tao, dao tay, dao gap
cuu mon » cuu mot, cuu cong, cuu tong
va phap » va phat, ban phap
ma hoi » mai hoi, xa hoi, ma hoa

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc sach dao tap, nghien ((cuu mon) or (cuu mo)) hoc nganh khoa hoc ma hoi va phap dau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc sach dao tap, nghien ((cuu mon) OR (cuu mo)) hoc nganh khoa hoc ma hoi va phap dau.
• Adding a wildcard symbol may retrieve word variants: doc sach dao tap, nghien ((cuu mon) or (cuu mo)) hoc nganh khoa hoc ma hoi va phap dau*.