Perhaps you should try some spelling variations:
nhanh tinh » nhanh thanh, hanh trinh, nhan sinh
hanh tinh » hanh trinh, thanh tinh, canh tinh
hang cong » dang cong, hang nong, thanh cong
bang cong » dang cong, bang song, dung cong
manh toan » thanh toan, anh tuan, tinh toan
khi xanh » khia canh, thi hanh, thi anh
toan tap » toan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi khi xanh - ((hanh tinh) OR (nhanh tinh)) cua ((hang cong) or (bang cong)) manh toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi khi xanh - ((hanh tinh) OR (nhanh tinh)) cua ((hang cong) OR (bang cong)) manh toan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi khi xanh - ((hanh tinh) OR (nhanh tinh)) cua ((hang cong) or (bang cong)) manh toan tap".
• Adding a wildcard symbol may retrieve word variants: doi khi xanh - ((hanh tinh) OR (nhanh tinh)) cua ((hang cong) or (bang cong)) manh toan tap*.