Perhaps you should try some spelling variations:
hoc chuyen » khong chuyen
sach tren » sach tien, sach tranh
thuc bach » truc bach, thuc cach, thuoc sach
thai cong » tai cong, thi cong, thanh cong
tren hoc » truyen hoc, trung hoc, triet hoc
bach hoa » bach khoa, bach ha, cach hoan
hoa thai » hong thai, hoa phan, hoa chat
so sach » so sanh, bo sach, co sach
ha dinh » ha tinh, ba dinh, tham dinh
va dinh » van dinh, va kinh, va tinh

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sach tren hoc chuyen đe ky thuat: kien thuc bach hoa thai cong ((ha dinh) OR (va dinh))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach tren hoc chuyen đe ky thuat: kien thuc bach hoa thai cong ((ha dinh) OR (va dinh))".
• Adding a wildcard symbol may retrieve word variants: so sach tren hoc chuyen đe ky thuat: kien thuc bach hoa thai cong ((ha dinh) OR (va dinh))*.