Perhaps you should try some spelling variations:
hanh lam » thanh lap, hanh kem, hanh va
sach ky » sach y, sach ty, sach kem
hanh em » hanh kem, anh em, hanh nam
cam duc » cam xuc, cao duc, pham duc
cua tre » cua te, cuu tre, cua triet
hieu va » lieu va, hieu qua
nang o » nang co, nang ho, nang ro
sac ky » cac ky, sai ky
va cam » va cham, va cac, va cao
o hoi » co hoi, o hoc, o hai

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu ((sach ky) or (sac ky)) nang o hoi. hieu va cam duc va ((hanh em) OR (hanh lam)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ky) OR (sac ky)) nang o hoi. hieu va cam duc va ((hanh em) OR (hanh lam)) cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach ky) or (sac ky)) nang o hoi. hieu va cam duc va ((hanh em) OR (hanh lam)) cua tre*".