Perhaps you should try some spelling variations:
thuat tach » thuat sach, thuat mach, thuat tac
nganh khoa » nganh hoa, nganh khong, doanh khoa
hoc nganh » hoc nhanh
tach hoc » cach hoc, mach hoc, tach hon
cuu cong » cua cong, thu cong, cac cong
cong hoc » dong hoc, cong hoa, cong coc
khoa hoc » hoa hoc
va phap » 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: thuat tach hoc tap, nghien cuu cong hoc nganh khoa hoc ma hoi ((va phap) or (va phat)) dau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat tach hoc tap, nghien cuu cong hoc nganh khoa hoc ma hoi ((va phap) OR (va phat)) dau.
• Adding a wildcard symbol may retrieve word variants: thuat tach hoc tap, nghien cuu cong hoc nganh khoa hoc ma hoi ((va phap) or (va phat)) dau*.