Perhaps you should try some spelling variations:
thanh dai » thanh hai, thanh tai, thanh dat
sach ky » sach y, sach ty, sach kem
cam tac » cac tac, cam tay, can tac
sac ky » cac ky, sai ky
nang o » nang co, nang ho, nang ro
va cam » va cham, va cac, va cao
cua tu » cua tuc, cua su, cua cu
o hai » co hai, so hai, o lai
gia » giao

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu ((sach ky) OR (sac ky)) nang o hai. lieu va cam tac gia thanh dai cua tu~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu ((sach ky) OR (sac ky)) nang o hai. lieu va cam tac gia thanh dai cua tu".
• Adding a wildcard symbol may retrieve word variants: vu ((sach ky) OR (sac ky)) nang o hai. lieu va cam tac gia thanh dai cua tu*.