Perhaps you should try some spelling variations:
luong thanh » muong thanh, truong thanh, dong thanh
thieu tinh » chieu tinh, thien tinh, lieu tinh
hanh trinh » canh tranh, hanh chinh
khong cong » thong cong, khong cang, chong cong
cong luong » cong thuong, nang luong, cong dong
trinh hay » trinh han, trinh may, trinh bay
hay khong » bay khong, hang khong, hoac khong
thanh cao » thanh ca, thanh cac, thanh thao

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((thieu tinh) or (trieu tinh)) - hanh trinh hay khong cong luong thanh cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu tinh) OR (trieu tinh)) - hanh trinh hay khong cong luong thanh cao*.