Perhaps you should try some spelling variations:
dinh lam » dinh van, tinh lao
danh lai » danh sai, gianh lai, hanh lam
cham duc » pham duc, cham soc, pham duy
cua tre » cua te, cuu tre, cua triet
hieu va » lieu va, hieu qua
hieu ve » hieu van
may hoi » may thoi, tay hoi, mai hoi
ky mang » ky nang, ke mang, ky dang
sac ky » cac ky, sai ky
te sac » te sach, te cac, te san

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sac ky mang may hoi. ((hieu ve) or (hieu va)) cham duc va ((danh lai) OR (dinh lam)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sac ky mang may hoi. ((hieu ve) OR (hieu va)) cham duc va ((danh lai) OR (dinh lam)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sac ky mang may hoi. ((hieu ve) or (hieu va)) cham duc va ((danh lai) OR (dinh lam)) cua tre".
• Adding a wildcard symbol may retrieve word variants: te sac ky mang may hoi. ((hieu ve) or (hieu va)) cham duc va ((danh lai) OR (dinh lam)) cua tre*.