Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
hanh tram » hanh tam, hanh trang, thanh tran
tuong tac » cong tac, tuong lai
luong tai » dung tai, luong va
ho chieu » theo chieu, hoc thieu, doi chieu
tram van » tran van, tam van, trang van
tong tac » trong tac, cong tac, tong tap
phan tap » phan lap, han tap, pha tap
van han » van hanh, van phan, van nhan

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 tram van han ((tong tac) or (((tuong tac) OR (luong tai)))) phan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu tinh - hanh tram van han ((tong tac) OR (((tuong tac) OR (luong tai)))) phan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu tinh - hanh tram van han ((tong tac) or (((tuong tac) OR (luong tai)))) phan tap".
• Adding a wildcard symbol may retrieve word variants: ho chieu tinh - hanh tram van han ((tong tac) or (((tuong tac) OR (luong tai)))) phan tap*.