Perhaps you should try some spelling variations:
trong manh » trong minh, trong anh, trong mach
quang tuan » quang thanh, quan luan, quang cua
hieu lang » chieu sang, hieu quang, nhieu tang
quang qua » quang cua, quang xuan, quang huy
manh toan » thanh toan, anh tuan, tinh toan
doc hieu » toc thieu, hoc thieu, hoc hien
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: doc hieu lang - tinh ((quang qua) or (quang tuan)) dung trong manh toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu lang - tinh ((quang qua) OR (quang tuan)) dung trong manh toan ban.
• Adding a wildcard symbol may retrieve word variants: doc hieu lang - tinh ((quang qua) or (quang tuan)) dung trong manh toan ban*.