Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
nhanh tinh » nhanh thanh, hanh trinh
nang cong » nang song, dang cong, bang cong
ho chieu » theo chieu, hoc thieu, doi chieu
thi nang » thi cong, ki nang, thi hanh
toan tap » toan ban
pha tap » pham tai

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu xanh - ((nhanh tinh) OR (nhan sinh)) thi nang cong trinh ((pha tap) OR (toan tap))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu xanh - ((nhanh tinh) OR (nhan sinh)) thi nang cong trinh ((pha tap) or (toan tap))~".
• Adding a wildcard symbol may retrieve word variants: ho chieu xanh - ((nhanh tinh) OR (nhan sinh)) thi nang cong trinh ((pha tap) or (toan tap))*.