Perhaps you should try some spelling variations:
khung hoang » phuong hoang
hanh trinh » canh tranh, hanh chinh
hien xanh » hien hanh, hien nhanh, chieu xanh
trinh cua » tinh cua, trinh luat, trinh quan
cua khung » cua nhung, cua chung, cua khong
hoang van » hang va
nhanh bac » nhanh ha, nhanh va
thanh bai » thanh hai, thanh tai, thanh oai

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 trinh cua khung hoang van ((nhanh bac) or (thanh bai))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien xanh - hanh trinh cua khung hoang van ((nhanh bac) OR (thanh bai)).
• Adding a wildcard symbol may retrieve word variants: hoc hien xanh - hanh trinh cua khung hoang van ((nhanh bac) or (thanh bai))*.