Perhaps you should try some spelling variations:
chau triet » cau triet, cua triet, cau trieu
cham duc » pham duc, cham soc, pham duy
tan hanh » tan thanh, tang hanh, toan hanh
hanh lai » hanh lam, hanh tai, thanh lap
te sach » toc sach
ty hang » ly hang, thi hang, thu hang
hieu ve » hieu van
hieu va » lieu va, hieu qua

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 ((ty hang) or (ty xang)) xa hoi. ((hieu ve) OR (hieu va)) cham duc tan hanh lai chau triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((ty hang) OR (ty xang)) xa hoi. ((hieu ve) OR (hieu va)) cham duc tan hanh lai chau triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((ty hang) or (ty xang)) xa hoi. ((hieu ve) OR (hieu va)) cham duc tan hanh lai chau triet".
• Adding a wildcard symbol may retrieve word variants: te sach ((ty hang) or (ty xang)) xa hoi. ((hieu ve) OR (hieu va)) cham duc tan hanh lai chau triet*.