Perhaps you should try some spelling variations:
nguoi sach » nguoi san
nganh khoa » nganh hoa, nganh khong, doanh khoa
nuoc sach » hoc sach, cuoc cach, cuon sach
hoc nganh » hoc nhanh
thoi tap » toi tap, hoc tap, thoi dai
khoa hoc » hoa hoc
van luan » van quan, van tuan, von luan
cuu mot » cua mot, cuu mo, huu mot
mot hoc » mon hoc, mo hoc, mot goc
hai van » thai van, ha van, hai tan
ma hai » ta hai, va hai, xa hai

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((nuoc sach) OR (nguoi sach)) thoi tap, nghien cuu mot hoc nganh khoa hoc ma hai van luan van~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((nuoc sach) OR (nguoi sach)) thoi tap, nghien cuu mot hoc nganh khoa hoc ma hai van luan van".
• Adding a wildcard symbol may retrieve word variants: ((nuoc sach) OR (nguoi sach)) thoi tap, nghien cuu mot hoc nganh khoa hoc ma hai van luan van*.