Perhaps you should try some spelling variations:
thanh trung » thanh tung
thieu tinh » chieu tinh, thien tinh, lieu tinh
trong dang » truong dang, trong dan, trong dong
hanh tang » hanh trang, anh tang, hanh mang
dang toan » dang tran, dan toan, dung toan
cua dung » cua dang, cua dong, qua dung
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((thieu tinh) or (trieu tinh)) - ((hanh tang) or (thanh trung)) cua dung trong dang toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu tinh) OR (trieu tinh)) - ((hanh tang) OR (thanh trung)) cua dung trong dang toan ban.
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu tinh) or (trieu tinh)) - ((hanh tang) or (thanh trung)) cua dung trong dang toan ban*.