Perhaps you should try some spelling variations:
hanh tranh » canh tranh, hanh trinh, hanh trang
cong khanh » cong thanh, cong khan, cong nhan
khanh lang » nhanh lang, khach hang, khanh linh
hoc thieu » hoc hien
tranh cua » doanh cua, manh cua
van cong » van dong, van phong, phan cong
lang cao » nang cao, lang co, quang cao
cua van » cua ban, cua vat, cua dan

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((toc thieu) or (hoc thieu)) tang - hanh tranh cua van cong khanh lang cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((toc thieu) OR (hoc thieu)) tang - hanh tranh cua van cong khanh lang cao*.