Perhaps you should try some spelling variations:
nghien huu » nghien cuu, nguyen huu, nhiem huu
thuoc cac » thuoc cuc, thuoc cao, thuoc dac
hang khoa » dung khoa
tang khoa » dang khoa, tang kha, vang khoa
cac cong » cua cong
cong tap » cuong tap, cong tac, cong tan
van luan » van quan, van tuan, von luan
huu mot » cuu mot, huy mot, hieu mot
mot hoc » mon hoc, mo hoc, mot goc
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: thuoc cac cong tap, nghien huu mot hoc ((tang khoa) or (hang khoa)) hoc xa hai van luan van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuoc cac cong tap, nghien huu mot hoc ((tang khoa) OR (hang khoa)) hoc xa hai van luan van.
• Adding a wildcard symbol may retrieve word variants: thuoc cac cong tap, nghien huu mot hoc ((tang khoa) or (hang khoa)) hoc xa hai van luan van*.