Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
hanh trung » thanh trung, hanh trang, manh trung
trong bang » trong ban, trong dang, trong tang
lieu tinh » trieu tinh, diep tinh, bien tinh
bang than » bang thanh, ban than, sang than
hoc lieu » hoc dieu, hoc sieu, hoc tieu
vap dung » van dung, ap dung, va dung
than cap » khan cap, thanh lap, thanh cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc lieu tinh - ((hanh trung) or (hanh trinh)) vap dung trong bang than cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc lieu tinh - ((hanh trung) OR (hanh trinh)) vap dung trong bang than cap.
• Adding a wildcard symbol may retrieve word variants: hoc lieu tinh - ((hanh trung) or (hanh trinh)) vap dung trong bang than cap*.