Perhaps you should try some spelling variations:
nghien thu » nghiem thuc, nghiep thuc, nghien cuu
nganh hoa » thanh hoa, khanh hoa, danh hoa
thu kinh » thu minh, thuat kinh, nha kinh
kinh hoc » sinh hoc, hinh hoc, tinh hoc
cong hoc » dong hoc, cong hoa, cong ho
cong coc » cong cuoc, cong cac, cong co
hai tan » hai van, hai quan
tan tan » tan tran, tran tan, tang tan
tan san » tai san, tan van, han san
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 kinh hoc tap, nghien thu ((cong hoc) or (cong coc)) nganh hoa hoc xa hai tan tan san~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu kinh hoc tap, nghien thu ((cong hoc) OR (cong coc)) nganh hoa hoc xa hai tan tan san.
• Adding a wildcard symbol may retrieve word variants: thu kinh hoc tap, nghien thu ((cong hoc) or (cong coc)) nganh hoa hoc xa hai tan tan san*.