Perhaps you should try some spelling variations:
dang trong » dung trong, dong trong, lang trong
trong manh » trong minh, trong anh, trong mach
hieu lang » chieu sang, hieu quang, nhieu tang
tran tuan » tran xuan, tran thanh, tranh luan
manh toan » thanh toan, anh tuan, tinh toan
toan ban » van ban
ho hieu » ho chieu, hoi hieu, nho hieu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho hieu lang - hanh ((tran tuan) or (tran quang)) dang trong manh toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho hieu lang - hanh ((tran tuan) OR (tran quang)) dang trong manh toan ban.
• Adding a wildcard symbol may retrieve word variants: ho hieu lang - hanh ((tran tuan) or (tran quang)) dang trong manh toan ban*.