Perhaps you should try some spelling variations:
nganh khong » nganh cong, nhanh chong, nganh nong
suc nganh » luc nganh, chuc nganh, suc manh
khong hoc » khung hoc, thong hoc, khong thuoc
thanh hoa » thanh pho
hach hoc » cach hoc, mach hoc, hoach hoi
cuu long » cuu cong, cuu tong, cuu nang
long suc » luong suc, cong suc, long cuc
thai van » thi van, thanh van, thai vung
tu hach » tu hanh, tu cach, tu sach
xa thai » ca thai, a thai, da thai
hoc xa » hoc ma

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu hach hoc tap, nghien cuu long suc nganh khong hoc xa thai van ((thanh san) or (thanh hoa))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu hach hoc tap, nghien cuu long suc nganh khong hoc xa thai van ((thanh san) OR (thanh hoa)).
• Adding a wildcard symbol may retrieve word variants: tu hach hoc tap, nghien cuu long suc nganh khong hoc xa thai van ((thanh san) or (thanh hoa))*.