Perhaps you should try some spelling variations:
thuc cach » thuoc sach, truoc cach, thuc hanh
cach thoi » cac thoi, cach thuc, cach noi
thoi dap » hoi dap, thoi dai, thi dap
dan khoa » dang khoa, da khoa, san khoa
khoa hoc » hoa hoc
tan nhan » tran nhan, tao nhan, van nhan
nhan dan » phan dau, gian dan, nhan tai
cuu mon » cuu mo, cuu cong, cuu tong
cuu mot » cua mot, cuu mo, huu mot
hai tan » hai van, hai quan
hoc xa » hoc ma
xa hai » xa thai, xua hai, xa hoi

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuc cach thoi dap, nghien ((cuu mon) OR (cuu mot)) hoc dan khoa hoc xa hai tan nhan dan~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuc cach thoi dap, nghien ((cuu mon) OR (cuu mot)) hoc dan khoa hoc xa hai tan nhan dan".
• Adding a wildcard symbol may retrieve word variants: thuc cach thoi dap, nghien ((cuu mon) OR (cuu mot)) hoc dan khoa hoc xa hai tan nhan dan*.