Perhaps you should try some spelling variations:
trong nhan » truong nhan, thong nhan, trong nhat
dung quang » dang quang, dung quan, luong quang
quang toan » quang tuan, quang tran, quang doan
hieu manh » chieu xanh, hieu nganh, dieu hanh
dung dung » ung dung, dung ung, dung dong
hoc hieu » hoc thieu, hoc hien, doc hieu
toan cao » toan ban, toan tap

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 - hanh ((trong nha) or (trong nhan)) dung dung quang toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hieu manh - hanh ((trong nha) OR (trong nhan)) dung dung quang toan cao.
• Adding a wildcard symbol may retrieve word variants: hoc hieu manh - hanh ((trong nha) or (trong nhan)) dung dung quang toan cao*.