Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
nganh cong » nhanh chong, thanh cong
nghe thong » he thong
thong tinh » thuong tinh, thong tin, thong minh
doi truyen » di truyen, hoi truyen, coi truyen
tinh doi » trinh doc, trinh do, tinh hoc
te sach » toc sach

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) or (thuoc sach)) nganh cong nghe thong tinh doi truyen thong~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (thuoc sach)) nganh cong nghe thong tinh doi truyen thong.
• Adding a wildcard symbol may retrieve word variants: ((te sach) or (thuoc sach)) nganh cong nghe thong tinh doi truyen thong*.