Perhaps you should try some spelling variations:
thuoc chuyen » hoc chuyen, thu huyen
trung thuoc » trung thuc, trung quoc, trung hoc
sach trung » mach trung, sach thuong, sach dung
kien thuoc » bien thuoc, trien thuoc, kien truc
khoa than » khoa luan, hoa thai, hoa tan
than cong » thanh cong, thuan cong, phan cong
anh khoa » doanh khoa, hang khoa
te sach » toc sach
cong va » dong va, cong ha, cong tac
va tinh » may tinh

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach trung thuoc chuyen đe ky thuat: ((kien thuoc) OR (kien thuc)) anh khoa than cong va tinh~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach trung thuoc chuyen đe ky thuat: ((kien thuoc) OR (kien thuc)) anh khoa than cong va tinh".
• Adding a wildcard symbol may retrieve word variants: te sach trung thuoc chuyen đe ky thuat: ((kien thuoc) OR (kien thuc)) anh khoa than cong va tinh*.