Perhaps you should try some spelling variations:
nghien thu » nghiem thuc, nghiep thuc, nghien cuu
hoc nganh » hoc nhanh
nganh hoa » thanh hoa, khanh hoa, danh hoa
thu sinh » thu minh, thu kinh, thuoc sinh
cong hoc » dong hoc, cong hoa, cong coc
tan tuan » tran tuan, than tuan, van tuan
tuan san » luan san, tan san, thanh san
xua hai » qua hai, cua hai, xuan thai
xa hai » xa thai, xa hoi, xa dai

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sinh hoc tap, nghien thu cong hoc nganh hoa hoc ((xa hai) OR (xua hai)) tan tuan san~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sinh hoc tap, nghien thu cong hoc nganh hoa hoc ((xa hai) OR (xua hai)) tan tuan san".
• Adding a wildcard symbol may retrieve word variants: thu sinh hoc tap, nghien thu cong hoc nganh hoa hoc ((xa hai) OR (xua hai)) tan tuan san*.