Perhaps you should try some spelling variations:
nganh cong » nhanh chong, thanh cong
hoach hoc » hoach hoi, hoach hoa, hoa hoc
hoc nganh » hoc nhanh
thuoc va » thuc va, thuong va, thuoc tai
thuoc ma » hoc ma, duoc ma
van nhan » van phan, van thanh, danh nhan
nhan tao » nhan tai, nhan dan
van hoc » van hoa
hai van » thai van, ha van, hai tan

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 hoc nganh cong ((thuoc va) OR (thuoc ma)) hai van nhan tao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu hoach hoc tap, nghien cuu van hoc nganh cong ((thuoc va) OR (thuoc ma)) hai van nhan tao".
• Adding a wildcard symbol may retrieve word variants: thu hoach hoc tap, nghien cuu van hoc nganh cong ((thuoc va) OR (thuoc ma)) hai van nhan tao*.