Perhaps you should try some spelling variations:
thien van » thi van
hanh thai » nhanh thai, hinh thai, hanh tai
thai cua » than cua, tai cuc, tri cua
tu sach » thu sach, su sach, te sach
va hanh » van hanh, va thanh, va danh
cam duc » cam xuc, cao duc, pham duc
cua tre » cua te, cuu tre, cua triet
sach ty » sach y, sach tu, sach thu
hieu ve » hieu va, hieu van
song xa » song cua
nong xa » dong xa, nong va, cong xay

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 ty ((nong xa) or (song xa)) hoi. ((hieu ve) or (thien van)) cam duc va hanh thai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty ((nong xa) OR (song xa)) hoi. ((hieu ve) OR (thien van)) cam duc va hanh thai cua tre.
• Adding a wildcard symbol may retrieve word variants: tu sach ty ((nong xa) or (song xa)) hoi. ((hieu ve) or (thien van)) cam duc va hanh thai cua tre*.