Perhaps you should try some spelling variations:
thiet danh » thien danh, thien anh, thien dang
hanh trung » thanh trung, hanh trang, manh trung
nhung lang » nhung van, nhanh lang, nhung cong
hoc thiet » hoc thieu, hoc thuyet, hoc hien
trung cua » truong cua, trung tuan, trung cap
cua nhung » va nhung
dan toan » van toan, dan than, manh toan
ban than » ban thanh, van thanh, ban hang

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc thiet danh - hanh trung cua nhung lang ((dan toan) or (ban than)) ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thiet danh - hanh trung cua nhung lang ((dan toan) OR (ban than)) ban.
• Adding a wildcard symbol may retrieve word variants: hoc thiet danh - hanh trung cua nhung lang ((dan toan) or (ban than)) ban*.