Perhaps you should try some spelling variations:
nganh khoa » nganh hoa, nganh khong, doanh khoa
thanh son » thanh san, thanh cong, thanh toan
hoc nganh » hoc nhanh
cach thuc » anh thuc, cac thu
thanh von » thanh van, thanh vo, thanh vuong
khoa hoc » hoa hoc
thuc tai » thuc thai, thuoc tai, thuc tap
tu cach » tu cac
bai hoi » bai choi, bai hoc, dai hoi
hoc bai » hoc dai, hoc giai
mon hoc » toan hoc, dong hoc
cuu mon » cuu mo, cuu mot, cuu cong

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu cach thuc tai, nghien cuu mon hoc nganh khoa hoc bai hoi ((thanh von) OR (thanh son)) tai~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu cach thuc tai, nghien cuu mon hoc nganh khoa hoc bai hoi ((thanh von) OR (thanh son)) tai".
• Adding a wildcard symbol may retrieve word variants: tu cach thuc tai, nghien cuu mon hoc nganh khoa hoc bai hoi ((thanh von) OR (thanh son)) tai*.