Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
tinh khong » tinh khang, tinh huong, benh khong
khoa phan » hoa phan, khoa than, khoa phau
phan cong » thanh cong
thuc anh » thuc hanh, thuy anh, thu anh
anh khoa » doanh khoa, hang khoa
cong may » cong xay, cong ma, cong hay
may minh » may tinh, mai minh, van minh
tu sach » thu sach, su sach, te sach

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

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