Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
nhanh tinh » nhanh thanh, hanh trinh, nhan sinh
hieu manh » chieu xanh, hieu nganh, dieu hanh
dang cong » dung cong
cong san » cong tac
than tap » han tap, phan tap, than cap
toan tap » toan ban
tinh vi » trinh vi, tinh voi, tinh va
vi dang » vu dang, va dang, vi dong

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((hieu manh) or (chieu sach)) - nhanh tinh vi dang cong san ((than tap) or (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((hieu manh) OR (chieu sach)) - nhanh tinh vi dang cong san ((than tap) OR (toan tap)).
• Adding a wildcard symbol may retrieve word variants: ho ((hieu manh) or (chieu sach)) - nhanh tinh vi dang cong san ((than tap) or (toan tap))*.