Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
dien tinh » diep tinh, bien tinh, dien hinh
trinh ven » trinh van, trinh den, tinh ven
trinh ve » trinh he, trinh va, trinh vi
cong van » cong vang, cong san, song van
so dien » co dien, so dieu, so bien
tan cao » toan cao, tao cao, tan ca
tay cao » tao cao, tay co, toan cao

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

• Performing a fuzzy search may retrieve terms with similar spellings: so dien tinh - canh ((trinh ve) or (trinh ven)) thong cong van ((tan cao) or (tay cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so dien tinh - canh ((trinh ve) OR (trinh ven)) thong cong van ((tan cao) OR (tay cao)).
• Adding a wildcard symbol may retrieve word variants: so dien tinh - canh ((trinh ve) or (trinh ven)) thong cong van ((tan cao) or (tay cao))*.