Perhaps you should try some spelling variations:
hanh thai » nhanh thai, hinh thai, hanh tai
cau thuc » cau truc, can thuc, cau phuc
thai cua » than cua, tai cuc, tri cua
cuu thuc » cuu tac
tu sach » thu sach, su sach, te sach
va hanh » van hanh, va thanh, va danh
sach tu » sach thu, cach tu, sach ty
hieu va » lieu va
nang xa » nang x, lang xa, nang ma
tu nang » tru nang, tu nong, tu nano
cua tre » cua te, cuu tre, cua triet

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 tu nang xa hoi. ((hieu va) or (hieu qua)) ((cau thuc) OR (cuu thuc)) va hanh thai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach tu nang xa hoi. ((hieu va) OR (hieu qua)) ((cau thuc) OR (cuu thuc)) va hanh thai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach tu nang xa hoi. ((hieu va) or (hieu qua)) ((cau thuc) OR (cuu thuc)) va hanh thai cua tre".
• Adding a wildcard symbol may retrieve word variants: tu sach tu nang xa hoi. ((hieu va) or (hieu qua)) ((cau thuc) OR (cuu thuc)) va hanh thai cua tre*.