Perhaps you should try some spelling variations:
khanh thanh » nhanh thanh, thanh thanh, phan thanh
hanh thanh » nhanh thanh, thanh thanh, hinh thanh
thanh toan » thanh hoa, thanh san, tinh toan
hieu xanh » chieu xanh, hieu manh, hieu nganh
pho trong » pho thong, cho trong, ho trong
doc hieu » toc thieu, hoc thieu, hoc hien

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc hieu xanh - ((hanh thanh) OR (khanh thanh)) pho trong cong ((xuan toan) or (thanh toan)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu xanh - ((hanh thanh) OR (khanh thanh)) pho trong cong ((xuan toan) OR (thanh toan)) cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc hieu xanh - ((hanh thanh) OR (khanh thanh)) pho trong cong ((xuan toan) or (thanh toan)) cao".
• Adding a wildcard symbol may retrieve word variants: doc hieu xanh - ((hanh thanh) OR (khanh thanh)) pho trong cong ((xuan toan) or (thanh toan)) cao*.