Perhaps you should try some spelling variations:
trinh chuan » trinh han, trinh quan, trinh luan
hanh trinh » canh tranh, hanh chinh
chuan nang » chua nang, chuan trang, chuc nang
tieu xanh » tieu danh, chieu xanh, dieu hanh
nang cong » nang song, dang cong, bang cong
van tuan » van quan, van ban, anh tuan
van tan » van ban, van tai, van thanh

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo tieu xanh - hanh trinh chuan nang cong ((van tan) or (van tuan)) tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu xanh - hanh trinh chuan nang cong ((van tan) OR (van tuan)) tap.
• Adding a wildcard symbol may retrieve word variants: theo tieu xanh - hanh trinh chuan nang cong ((van tan) or (van tuan)) tap*.