Perhaps you should try some spelling variations:
nghien cua » nghien cuu, nghiep cua, nghiep vua
nhanh hoan » thanh hoang, thanh hoa, khanh hoa
nhanh hoa » thanh hoa, khanh hoa, nhanh ha
tinh hoc » sinh hoc, tin hoc, hinh hoc
cong hoa » dong hoa, dong hoc, hang hoa
te tinh » tue tinh, tre tinh, ve tinh
hoi cua » hoi chuc
cua nha » cua nhan, cua ngan
nha tai » nhan tai, khau tai, chat tai
hoc xa » hoc ma

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

• Performing a fuzzy search may retrieve terms with similar spellings: te tinh hoc tap, nghien cua cong hoa ((nhanh hoa) or (nhanh hoan)) hoc xa hoi cua nha tai~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te tinh hoc tap, nghien cua cong hoa ((nhanh hoa) OR (nhanh hoan)) hoc xa hoi cua nha tai.
• Adding a wildcard symbol may retrieve word variants: te tinh hoc tap, nghien cua cong hoa ((nhanh hoa) or (nhanh hoan)) hoc xa hoi cua nha tai*.