Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
nhung cong » dung cong, thong cong, hang cong
hoc chieu » hoc thieu, ho chieu, hoc hien
trinh van » trinh han, trinh quan, trinh toan
trinh va » trinh vat, trinh ve, trinh vi
cong san » cong tac
phan dau » phan tu, hang dau
phan cac » nhan cach, phan lap, phan van

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc chieu tinh - canh ((trinh va) or (trinh van)) nhung cong san ((phan dau) or (phan cac))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu tinh - canh ((trinh va) OR (trinh van)) nhung cong san ((phan dau) OR (phan cac)).
• Adding a wildcard symbol may retrieve word variants: hoc chieu tinh - canh ((trinh va) or (trinh van)) nhung cong san ((phan dau) or (phan cac))*.