Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
nganh cong » nhanh chong, thanh cong
thong tinh » thuong tinh, thong tin, thong minh
va truyen » hoa truyen, co truyen, tu truyen
di truyen » co truyen
hoc sach » hoc sinh, hoc cac, hoc anh
cong he » cong che, cong ha, cong de

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc sach) or (thuat sach)) nganh cong he thong tinh ((va truyen) OR (di truyen)) thong~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc sach) OR (thuat sach)) nganh cong he thong tinh ((va truyen) OR (di truyen)) thong.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc sach) or (thuat sach)) nganh cong he thong tinh ((va truyen) OR (di truyen)) thong".
• Adding a wildcard symbol may retrieve word variants: ((hoc sach) or (thuat sach)) nganh cong he thong tinh ((va truyen) OR (di truyen)) thong*.