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
di truyen » co truyen
thu sach » thuat sach, thu hoach, khau sach
tu sach » su sach, te sach, tu cach
tin di » tinh doi

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) OR (thuoc sach)))) nganh cong nghe thong tin di truyen thong~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (((thu sach) OR (thuoc sach)))) nganh cong nghe thong tin di truyen thong.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (((thu sach) OR (thuoc sach)))) nganh cong nghe thong tin di truyen thong".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (((thu sach) OR (thuoc sach)))) nganh cong nghe thong tin di truyen thong*.