Perhaps you should try some spelling variations:
cang thong » cang thang, cong thong, hang thong
mang thong » mang trong, hang thuong, dang thuong
tieu xanh » tieu danh, chieu xanh, dieu hanh
thong tan » thong than, thong tran, thong tin
va thong » va thuong, va phuong, he thong
tan toan » tan tran, tap toan, van toan
toan cao » toan ban, toan tap

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "theo tieu xanh - ((cang thong) OR (mang thong)) va thong thong tan toan cao~".
• Adding a wildcard symbol may retrieve word variants: theo tieu xanh - ((cang thong) OR (mang thong)) va thong thong tan toan cao*.