Perhaps you should try some spelling variations:
kieu tinh » trieu tinh, diep tinh, bien tinh
lieu tinh » trieu tinh, diep tinh, bien tinh
thanh son » thanh san, thanh cong, thanh toan
dung cong » dung trong
qua dung » quang dung, su dung, qua song
cong tac » cong ty
toan cau » toan ban, toan tap, toan tai
toan cao » toan ban, toan tap
son qua » song qua, mon qua, so qua

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((kieu tinh) or (lieu tinh)) - thanh son qua dung cong tac ((toan cau) or (toan cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((kieu tinh) OR (lieu tinh)) - thanh son qua dung cong tac ((toan cau) OR (toan cao)).
• Adding a wildcard symbol may retrieve word variants: theo ((kieu tinh) or (lieu tinh)) - thanh son qua dung cong tac ((toan cau) or (toan cao))*.