Perhaps you should try some spelling variations:
nganh nong » nganh cong
suc nganh » luc nganh, chuc nganh, suc manh
thai vung » thai cong, thai van
thanh van » thanh san, thanh toan, thanh phan
hach hoc » cach hoc, mach hoc, hoach hoi
cuu long » cuu cong, cuu tong, cuu nang
long suc » luong suc, cong suc, long cuc
nong hoc » dong hoc, nang hoc, nong thon
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 nong hoc xa thai vung ((thanh van) or (thanh pho))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu hach hoc tap, nghien cuu long suc nganh nong hoc xa thai vung ((thanh van) OR (thanh pho)).
• Adding a wildcard symbol may retrieve word variants: tu hach hoc tap, nghien cuu long suc nganh nong hoc xa thai vung ((thanh van) or (thanh pho))*.