Perhaps you should try some spelling variations:
tranh chua » tranh cua, trinh chuan, tranh chap
hanh tranh » canh tranh, hanh trinh, hanh trang
quang toan » quang tuan, quang tran, quang doan
tieu xanh » chieu xanh, dieu hanh, tien anh
tieu danh » dieu danh, tiep danh, thien danh
chua nang » chuc nang, chua xang, kha nang
nang cong » nang song, dang cong, bang cong
vang toan » van toan, dang toan, vang trang

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: theo ((tieu xanh) OR (tieu danh)) - hanh tranh chua nang cong ((vang toan) OR (quang toan)) tap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((tieu xanh) or (tieu danh)) - hanh tranh chua nang cong ((vang toan) OR (quang toan)) tap~".
• Adding a wildcard symbol may retrieve word variants: theo ((tieu xanh) or (tieu danh)) - hanh tranh chua nang cong ((vang toan) OR (quang toan)) tap*.