Perhaps you should try some spelling variations:
thu tinh » thue tinh, thuy tinh, thuc tinh
tinh hoc » sinh hoc, tin hoc, hinh hoc
dan khoa » dang khoa, da khoa, san khoa
khoa hoc » hoa hoc
van quan » van ban
quan san » luan san, quan sat, quan van
cuu mon » cuu mot, cuu cong, cuu tong
hai van » thai van, ha van, hai tan
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: thu tinh hoc tap, nghien ((cuu mon) or (cuu mo)) hoc dan khoa hoc xa hai van quan san~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu tinh hoc tap, nghien ((cuu mon) OR (cuu mo)) hoc dan khoa hoc xa hai van quan san.
• Adding a wildcard symbol may retrieve word variants: thu tinh hoc tap, nghien ((cuu mon) or (cuu mo)) hoc dan khoa hoc xa hai van quan san*.