Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
nhanh mang » nhanh lang, nhanh quang, nhanh thang
thong cong » trong cong, tong cong, thong thong
hanh tang » hanh trang, anh tang, hanh tung
hanh mang » hanh trang, nhanh lang, thanh hang
ho chieu » theo chieu, hoc thieu, doi chieu
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan tap » toan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho chieu sach - ((hanh tang) or (((hanh mang) OR (nhanh mang)))) he thong cong tac toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - ((hanh tang) OR (((hanh mang) OR (nhanh mang)))) he thong cong tac toan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sach - ((hanh tang) or (((hanh mang) OR (nhanh mang)))) he thong cong tac toan tap".
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - ((hanh tang) or (((hanh mang) OR (nhanh mang)))) he thong cong tac toan tap*.