Perhaps you should try some spelling variations:
thuat cach » thuat sach, thuat canh, thuat tach
thuat mach » thuat sach, thuat tach, thuyet mach
nganh khoa » nganh hoa, nganh khong, doanh khoa
goc nganh » hoc nganh, hoc nhanh, cac nganh
danh nhan » doanh nhan, thanh nhan, benh nhan
khoa hoc » hoa hoc
hoi danh » hop danh, hoi dan, hoc danh
nhan tai » hang tai, van tai, toan tai
cuu mot » cua mot, cuu mo, huu mot
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 cach) OR (thuat mach)) hoc tap, nghien cuu mot goc nganh khoa hoc ma hoi danh nhan tai~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thuat cach) OR (thuat mach)) hoc tap, nghien cuu mot goc nganh khoa hoc ma hoi danh nhan tai".
• Adding a wildcard symbol may retrieve word variants: ((thuat cach) OR (thuat mach)) hoc tap, nghien cuu mot goc nganh khoa hoc ma hoi danh nhan tai*.