Perhaps you should try some spelling variations:
thien nang » thien bang, thien dang, trien nang
hanh trinh » canh tranh, hanh chinh
thong cong » trong cong, tong cong, thong thong
thiet anh » thien anh, thuyet anh, thien danh
trinh va » trinh van, trinh vat, trinh ve
va thong » va thuong, va phuong, he thong
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van than
than cap » khan cap, thanh lap, thanh cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: toan ((thiet anh) or (thien nang)) - hanh trinh va thong cong dan than cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toan ((thiet anh) OR (thien nang)) - hanh trinh va thong cong dan than cap.
• Adding a wildcard symbol may retrieve word variants: toan ((thiet anh) or (thien nang)) - hanh trinh va thong cong dan than cap*.