Perhaps you should try some spelling variations:
thong dong » thong duong, thuong dong, thong cong
hanh trinh » canh tranh, hanh chinh
dong thanh » truong thanh
hieu manh » chieu xanh, hieu nganh, dieu hanh
trinh cua » tinh cua, trinh luat, trinh quan
cua thong » cua thuong, cua khong, cua tong
hoc hieu » hoc thieu, hoc hien, doc hieu
phan dau » phan tu, hang dau
phan cac » nhan cach, phan lap, phan xay
phan van » pham van, thanh van, luan van

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hieu manh - hanh trinh cua thong dong thanh ((phan dau) or (((phan cac) OR (phan van))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hieu manh - hanh trinh cua thong dong thanh ((phan dau) OR (((phan cac) OR (phan van)))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hieu manh - hanh trinh cua thong dong thanh ((phan dau) or (((phan cac) OR (phan van))))".
• Adding a wildcard symbol may retrieve word variants: hoc hieu manh - hanh trinh cua thong dong thanh ((phan dau) or (((phan cac) OR (phan van))))*.