Perhaps you should try some spelling variations:
trinh phan » trinh quan, thanh phan, trinh toan
vang thang » cang thang, van thang, lang thang
trinh han » trinh quan
bang cong » dang cong, bang song, hang cong
cong vang » cong lang, cong quang, cong ngang
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 phan) or (trinh han)) bang cong vang thang va~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chi hanh - canh ((trinh phan) OR (trinh han)) bang cong vang thang va*.