Perhaps you should try some spelling variations:
tran hanh » tran thanh, tran khanh, tran manh
cua triet » cua viet, su triet, va triet
ve triet » va trien, su triet
hanh vai » hanh vi, hanh va, hanh tai
duc tran » duc tan, duc toan, duc tren
ve pham » vi pham, v pham, ve phan
te sach » toc sach
sach ky » sac ky, sach y, sach ty
hoa hoi » khoa hoi, hoa hoc, hoa doi
ky dang » ky nang, ky danh
hieu ve » hieu va, hieu van
ha hoi » ha noi, xa hoi, va hoi

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ky dang ((ha hoi) OR (hoa hoi)). hieu ve pham duc tran hanh vai ((cua triet) or (ve triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky dang ((ha hoi) OR (hoa hoi)). hieu ve pham duc tran hanh vai ((cua triet) OR (ve triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky dang ((ha hoi) OR (hoa hoi)). hieu ve pham duc tran hanh vai ((cua triet) or (ve triet))".
• Adding a wildcard symbol may retrieve word variants: te sach ky dang ((ha hoi) OR (hoa hoi)). hieu ve pham duc tran hanh vai ((cua triet) or (ve triet))*.