Perhaps you should try some spelling variations:
cong thanh » dong thanh, cong trinh, truong thanh
tang luan » dung luan
theo chu » theo chieu, cho chu, chao chu
chu xanh » chu manh, chieu xanh, chua xang
hang cua » mang cua, hang ca, huong cua
cong tan » cong tac, cong san, cong ty
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: theo chu xanh - hanh ((tang luan) or (hang cua)) nhung ((cong tan) or (cong thanh)) toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chu xanh - hanh ((tang luan) OR (hang cua)) nhung ((cong tan) OR (cong thanh)) toan tap.
• Adding a wildcard symbol may retrieve word variants: theo chu xanh - hanh ((tang luan) or (hang cua)) nhung ((cong tan) or (cong thanh)) toan tap*.