Perhaps you should try some spelling variations:
hoc chuyen » khong chuyen
sach sinh » sach kinh, sach danh, sach song
dai duong » dai cuong, hai duong, dai luong
thuc anh » thuc hanh, thu anh, thuc thanh
thuy anh » thuy linh
khoa dai » hoa dai, khoa doi, khoa tai
duong ma » duong va, cuong ma, duong manh
su sach » so sach, vu sach
ma tinh » may tinh, man tinh, mai tinh

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach sinh hoc chuyen đe ky thuat: kien ((thuc anh) or (thuy anh)) khoa dai duong ma tinh~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach sinh hoc chuyen đe ky thuat: kien ((thuc anh) OR (thuy anh)) khoa dai duong ma tinh.
• Adding a wildcard symbol may retrieve word variants: su sach sinh hoc chuyen đe ky thuat: kien ((thuc anh) or (thuy anh)) khoa dai duong ma tinh*.