Perhaps you should try some spelling variations:
cach thoi » cac thoi, cach thuc, cach noi
thoi tap » toi tap, hoc tap, thoi dai
cuu cong » cua cong, thu cong, cac cong
hoc danh » hoc anh, hoc hanh, hoc nganh
te cach » ve cach, te sach, tu cach
nhan va » nhan tai, nhan dan, nhan tao
hoc xa » hoc ma
hoi ca » hoi cua, hoi cac, hoi cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: te cach thoi tap, nghien cuu cong ((hoc danh) or (hoc dan)) hoa hoc xa hoi ca nhan va~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te cach thoi tap, nghien cuu cong ((hoc danh) OR (hoc dan)) hoa hoc xa hoi ca nhan va.
• Adding a wildcard symbol may retrieve word variants: te cach thoi tap, nghien cuu cong ((hoc danh) or (hoc dan)) hoa hoc xa hoi ca nhan va*.