Perhaps you should try some spelling variations:
thieu nien » thien nhien
cua triet » cua viet, su triet, va triet
hanh tai » thanh tai, hang tai, han tai
hoa duoc » hoa hoc
nien hoa » dien hoa, tien hoa, kien hoa
dan tay » ban tay, dao tay, gian tay
sach ky » sach y, sach ty, sach kem
duoc va » nuoc va, duc va, duoc ma
va hanh » van hanh, va thanh, va danh
cua tre » cua te, cuu tre, dua tren
tay ho » tay co, tay o, tay khao
sac ky » cac ky, sai ky

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu ((sach ky) OR (sac ky)) dan tay ho. thieu nien hoa duoc va hanh tai ((cua tre) or (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu ((sach ky) OR (sac ky)) dan tay ho. thieu nien hoa duoc va hanh tai ((cua tre) OR (cua triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu ((sach ky) OR (sac ky)) dan tay ho. thieu nien hoa duoc va hanh tai ((cua tre) or (cua triet))".
• Adding a wildcard symbol may retrieve word variants: thu ((sach ky) OR (sac ky)) dan tay ho. thieu nien hoa duoc va hanh tai ((cua tre) or (cua triet))*.