Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
trinh van » trinh han, trinh quan, trinh toan
thanh van » thanh san, thanh toan, thanh phan
san chang » ban hang, dan chan, van khang
thi hanh » thi thanh
san hang » ban hang, van hang, san sang
doi thi » doi thoi, do thi, 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 thi hanh - canh ((trinh van) or (thanh van)) thong cong ((san hang) or (san chang)) dau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi thi hanh - canh ((trinh van) OR (thanh van)) thong cong ((san hang) OR (san chang)) dau.
• Adding a wildcard symbol may retrieve word variants: doi thi hanh - canh ((trinh van) or (thanh van)) thong cong ((san hang) or (san chang)) dau*.