Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
nhung cong » dung cong, thong cong, hang cong
doi chieu » doc hieu, doi chi, ho chieu
hanh sinh » hanh tinh, hanh dinh, hinh sinh
cong tac » cong ty
sinh va » sinh vat, tinh va, dinh van
tac van » tac vang, cac van, tac 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 va nhung cong tac van ban~.
• Adding a wildcard symbol may retrieve word variants: doi chieu tinh - hanh sinh va nhung cong tac van ban*.