Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
nganh cong » nhanh chong, thanh cong
thong dien » thong dieu, thong tin, thong viet
va truyen » hoa truyen, co truyen, di truyen
thu sach » tu sach, thuat sach, thu hoach
cong he » cong che, cong ha, cong de
dien va » dien hoa

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((thu sach) OR (thuoc sach)) nganh cong he thong dien va truyen thong~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thu sach) OR (thuoc sach)) nganh cong he thong dien va truyen thong".
• Adding a wildcard symbol may retrieve word variants: ((thu sach) OR (thuoc sach)) nganh cong he thong dien va truyen thong*.