Perhaps you should try some spelling variations:
trinh chuan » trinh quan, trinh luan, trinh phan
lang thang » cang thang, dang thanh, hung thang
trinh han » trinh quan
bang cong » dang cong, bang song, hang cong
cong lang » cong vang, cong luong, cong quang
chi hanh » chi nhanh, chi thanh, thi hanh
thang va » hang va, trang va, thong va
doi chi » doi khi

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi chi hanh - canh ((trinh chuan) or (trinh han)) bang cong lang thang va~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chi hanh - canh ((trinh chuan) OR (trinh han)) bang cong lang thang va*.