Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
trinh toan » tinh toan, thanh toan, trinh han
tuong cong » truong cong, trong cong, tong cong
trinh vat » trinh van, trinh luat, sinh vat
ho chieu » theo chieu, hoc thieu, doi chieu
cong san » cong tac
tran tap » toan tap, tran tuan, trang tai
tran tan » tran tuan, tran van, tran thanh

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho chieu tinh - hanh ((trinh vat) or (trinh toan)) tuong cong san ((tran tap) OR (tran tan))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu tinh - hanh ((trinh vat) OR (trinh toan)) tuong cong san ((tran tap) OR (tran tan)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu tinh - hanh ((trinh vat) or (trinh toan)) tuong cong san ((tran tap) OR (tran tan))".
• Adding a wildcard symbol may retrieve word variants: ho chieu tinh - hanh ((trinh vat) or (trinh toan)) tuong cong san ((tran tap) OR (tran tan))*.