Perhaps you should try some spelling variations:
cong thanh » dong thanh, cong trinh, cong tan
hanh trung » thanh trung, hanh trang, manh trung
tieu xanh » tieu danh, chieu xanh, dieu hanh
trung cao » truong cao, trung cap, trung co
dung cong » dung trong
cao dung » cao dang, cao dong, cao ung
san ban » sang ban, van ban, can ban

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 trung cao dung cong thanh san ban~.
• Adding a wildcard symbol may retrieve word variants: theo tieu xanh - hanh trung cao dung cong thanh san ban*.