Perhaps you should try some spelling variations:
thuc hach » thuc hanh, chuc hach, thuc cach
tin khong » tinh khong, tien khong, thinh khong
hach toan » thanh toan, manh toan
toan phan » thanh phan, toan ban, hoa phan
phan hung » phan chung, phan ung, phan hong
thu sach » thuat sach, thuoc sach, thu hoach
hung dan » huong dan, dung dan, tung dan
dan tinh » doan tinh, dang tinh, dan trinh
tu sach » su sach, te sach, tu cach

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 (thu sach)) tin khong chuyen đe ky thuat: kien thuc hach toan phan hung dan tinh~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) OR (thu sach)) tin khong chuyen đe ky thuat: kien thuc hach toan phan hung dan tinh".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) OR (thu sach)) tin khong chuyen đe ky thuat: kien thuc hach toan phan hung dan tinh*.