Perhaps you should try some spelling variations:
nganh khong » nganh cong, nhanh chong, nganh nong
khong thuoc » khang thuoc, hong phuoc, dong thuoc
hoach hoc » hoach hoi, hoach hoa, hoa hoc
hoa nganh » hoc nganh, khoi nganh, hoa doanh
thuoc va » thuc va, thuoc ma, thuong va
nhan tao » nhan tai, nhan dan
hoi van » hoi dan, hai van, hoi han

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu hoach hoc tap, nghien cuu van hoa nganh khong thuoc va ((hoi van) OR (hoi va)) nhan tao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu hoach hoc tap, nghien cuu van hoa nganh khong thuoc va ((hoi van) OR (hoi va)) nhan tao".
• Adding a wildcard symbol may retrieve word variants: thu hoach hoc tap, nghien cuu van hoa nganh khong thuoc va ((hoi van) OR (hoi va)) nhan tao*.