Perhaps you should try some spelling variations:
thanh tinh » thanh binh, nhanh tinh, than kinh
quang lang » quan lang, quang dang, quang hoang
lang trong » dung trong, cong trong, dong trong
hieu manh » chieu xanh, hieu nganh, hien hanh
trong van » trong cac
van toan » van tuan, van tan, van thanh
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 ((hieu manh) or (dieu hanh)) - thanh tinh quang lang trong van toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hieu manh) OR (dieu hanh)) - thanh tinh quang lang trong van toan ban.
• Adding a wildcard symbol may retrieve word variants: hoc ((hieu manh) or (dieu hanh)) - thanh tinh quang lang trong van toan ban*.