Perhaps you should try some spelling variations:
thi hanh » thi thanh
dan dinh » dang dinh, doan dinh, van dinh
cham duc » pham duc, pham duy, phan duc
dinh cu » dinh cuu, dinh chuc, dinh chau
sach ky » sac ky, sach y, sach kem
nang xa » nang x, lang xa, nang ma
sach ty » sach y, sach tu, sach thu
va dan » ca dan, va dao, va dau
cu tre » cu tren, cua tre, cuu tre

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) or (sach ty)) nang xa hoi. thi hanh ((cham duc) OR (cham soc)) va dan dinh cu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sach ky) OR (sach ty)) nang xa hoi. thi hanh ((cham duc) OR (cham soc)) va dan dinh cu tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((sach ky) or (sach ty)) nang xa hoi. thi hanh ((cham duc) OR (cham soc)) va dan dinh cu tre*".