Perhaps you should try some spelling variations:
nhung phuong » dung phuong, nhu phuong, truong phuong
hanh trinh » canh tranh, hanh chinh
phuong van » phung van, phong van, phuong lan
tieu xanh » tieu danh, chieu xanh, dieu hanh
trinh va » trinh van, trinh vat, trinh ve
nhan tai » hang tai, van tai, toan tai
han tap » han tai, toan tap, nhan tao

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 va nhung phuong van ((han tap) or (nhan tai))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu xanh - hanh trinh va nhung phuong van ((han tap) OR (nhan tai)).
• Adding a wildcard symbol may retrieve word variants: theo tieu xanh - hanh trinh va nhung phuong van ((han tap) or (nhan tai))*.