Perhaps you should try some spelling variations:
theo hieu » theo chieu, theo tieu, thien hieu
hieu lang » chieu sang, hieu quang, nhieu tang
trinh cua » trinh luat, trinh quan, trinh luan
nang hang » nang sang, cang thang, lang thang
hang hang » cang thang, hung thang, lang thang
tinh cua » sinh cua, tinh chat, tranh cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo hieu lang - hanh ((trinh cua) OR (tinh cua)) dung trong ((nang hang) or (hang hang)) ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo hieu lang - hanh ((trinh cua) OR (tinh cua)) dung trong ((nang hang) OR (hang hang)) ban*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo hieu lang - hanh ((trinh cua) OR (tinh cua)) dung trong ((nang hang) or (hang hang)) ban*".