Perhaps you should try some spelling variations:
nhanh thang » nhanh thanh, nhanh quang, hanh trang
phuong dong » phuong dung, phuong hoang, chuong duong
chieu sach » chiet tach, chieu xanh, hieu cach
chieu sang » chieu xanh, hieu lang, nhieu tang
va phuong » va thuong, cac phuong
thang va » hang va, trang va, thong va
dong tac » cong tac, dong tai, dong bac
tac toan » tap toan, tam toan, hach toan
toan cao » toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((((chieu sach) OR (chieu sang))) or (chinh sach)) - nhanh thang va phuong dong tac toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((((chieu sach) OR (chieu sang))) OR (chinh sach)) - nhanh thang va phuong dong tac toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((((chieu sach) OR (chieu sang))) or (chinh sach)) - nhanh thang va phuong dong tac toan cao".
• Adding a wildcard symbol may retrieve word variants: theo ((((chieu sach) OR (chieu sang))) or (chinh sach)) - nhanh thang va phuong dong tac toan cao*.