Perhaps you should try some spelling variations:
trinh phan » trinh han, trinh quan, thanh phan
lanh tranh » canh tranh, lan tranh, hanh trinh
lanh manh » lan anh, van manh, anh anh
theo chu » theo chieu, cho chu, theo yeu
chao chu » cho chu, cua chu, cao cho
ban cong » bang cong, van cong, phan cong
phan dau » phan tu, hang dau

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 chu) OR (chao chu)) xanh - ((lanh manh) OR (lanh tranh)) cua ban cong trinh phan dau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((theo chu) or (chao chu)) xanh - ((lanh manh) OR (lanh tranh)) cua ban cong trinh phan dau~".
• Adding a wildcard symbol may retrieve word variants: ((theo chu) or (chao chu)) xanh - ((lanh manh) OR (lanh tranh)) cua ban cong trinh phan dau*.