Perhaps you should try some spelling variations:
khong thuoc » khang thuoc, hong phuoc, dong thuoc
nganh khong » nganh cong, nhanh chong, nganh nong
hoc nganh » hoc nhanh
thoi dai » hoc dai, hoi dap, hoi dan
tong tap » tuong tac, trong tan, cong tac
thuoc va » thuc va, thuoc ma, thuong va
van tuan » van quan, van ban, anh tuan
tuan san » luan san, tan san, thanh san
vu sach » vu bach, su sach, vu khach
cuu mon » cuu mo, cuu mot, cuu cong
mon hoc » toan hoc, dong hoc
hoi van » hoi va, hoi dan, hai van
va hoi » xa hoi, va hoc, va hoa

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach ((thoi dai) or (tong tap)), nghien cuu mon hoc nganh khong thuoc va hoi van tuan san~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ((thoi dai) OR (tong tap)), nghien cuu mon hoc nganh khong thuoc va hoi van tuan san.
• Adding a wildcard symbol may retrieve word variants: vu sach ((thoi dai) or (tong tap)), nghien cuu mon hoc nganh khong thuoc va hoi van tuan san*.