Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
thong cong » trong cong, tong cong, thong thong
trinh toan » tinh toan, thanh toan, trinh han
ho chieu » theo chieu, hoc thieu, doi chieu
tang van » dang van, hoang van, trong van
toan cau » toan cao, toan ban, toan tap

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 ((tang van) or (hang va)) thong cong trinh toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu tinh - hanh ((tang van) OR (hang va)) thong cong trinh toan cau.
• Adding a wildcard symbol may retrieve word variants: ho chieu tinh - hanh ((tang van) or (hang va)) thong cong trinh toan cau*.