Perhaps you should try some spelling variations:
hien xanh » hien hanh, hien nhanh, chieu xanh
hang cong » dang cong, hang nong, bang cong
dinh cua » dinh cuu, sinh cua, tinh cua
cong van » cong vang, cong san, song van
van tuan » van quan, van ban, anh tuan
tuan cao » toan cao, juan cao, quang cao
dinh cu » dinh cuu, dinh chuc, dinh chau

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hien xanh - hanh ((dinh cua) or (dinh cu)) hang cong van tuan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien xanh - hanh ((dinh cua) OR (dinh cu)) hang cong van tuan cao.
• Adding a wildcard symbol may retrieve word variants: hoc hien xanh - hanh ((dinh cua) or (dinh cu)) hang cong van tuan cao*.