Perhaps you should try some spelling variations:
trung tuan » trung thanh, trung tam, tran tuan
chua xang » chuc nang, chu bang, chua dong
chua nang » chuc nang, kha nang, cuu nang
trang cua » tranh cua, tang cua, trung cua
dong tac » cong tac, dong tai, dong bac
tac toan » tap toan, tam toan, hach toan
toan tap » toan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((chua xang) OR (chua nang)) - hanh ((trang cua) or (trung tuan)) cong dong tac toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chua xang) OR (chua nang)) - hanh ((trang cua) OR (trung tuan)) cong dong tac toan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chua xang) OR (chua nang)) - hanh ((trang cua) or (trung tuan)) cong dong tac toan tap".
• Adding a wildcard symbol may retrieve word variants: theo ((chua xang) OR (chua nang)) - hanh ((trang cua) or (trung tuan)) cong dong tac toan tap*.