Perhaps you should try some spelling variations:
cong thanh » dong thanh, cong trinh, cong tan
thanh toan » thanh hoa, thanh san, tinh toan
hoc thieu » toc thieu, hoc hien
canh manh » lanh manh, canh tranh, cach mang
cua dung » cua dang, cua dong, cua rung
qua dung » quang dung, su dung, qua song
toan cao » toan ban, toan tap
doi chi » doi khi

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: ((hoc thieu) OR (doi chi)) xanh - canh manh ((cua dung) OR (qua dung)) cong thanh toan cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc thieu) or (doi chi)) xanh - canh manh ((cua dung) OR (qua dung)) cong thanh toan cao~".
• Adding a wildcard symbol may retrieve word variants: ((hoc thieu) or (doi chi)) xanh - canh manh ((cua dung) OR (qua dung)) cong thanh toan cao*.