Perhaps you should try some spelling variations:
thuong cong » thong cong, thuong con, thuong dong
trinh quan » tinh quang, trinh luat, trinh han
tieu xanh » tieu danh, chieu xanh, dieu hanh
trinh van » trinh han, trinh toan, dinh van
cong van » cong vang, cong san, song van
van tai » von tai, van tuan
tai cao » thai cao, tao cao, tai sao

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo tieu xanh - hanh ((trinh van) OR (trinh quan)) thuong cong van tai cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo tieu xanh - hanh ((trinh van) OR (trinh quan)) thuong cong van tai cao".
• Adding a wildcard symbol may retrieve word variants: theo tieu xanh - hanh ((trinh van) OR (trinh quan)) thuong cong van tai cao*.