Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
doi chieu » doc hieu, doi chi, ho chieu
dang cong » dung cong
sinh cua » manh cua, dinh cuu, sinh va
chinh ta » chinh tai, chinh va, chinh tri
cong tac » cong ty
tac chat » tao chat, cac chat, tac phat
chat cau » chat cam, chat cao, chat va

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi chieu tinh - hanh ((sinh cua) or (chinh ta)) dang cong tac chat cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu tinh - hanh ((sinh cua) OR (chinh ta)) dang cong tac chat cau.
• Adding a wildcard symbol may retrieve word variants: doi chieu tinh - hanh ((sinh cua) or (chinh ta)) dang cong tac chat cau*.