Perhaps you should try some spelling variations:
nang mai » nang ma, nang tai, lang mai
hanh cac » hang cac, hanh cat, nhanh cay
tu sach » thu sach, su sach, te sach
cac toc » cac toi, cac nuoc, cac thoi
hanh ca » hanh cat, hanh cua, hanh cad
cuu tre » cua tre, cau tren, cau treo
sach ty » sach y, sach tu, sach thu
cac tuc » cac tu, cac tac, cac nuoc
hieu va » lieu va, hieu qua
mai hoi » mai khoi, dai hoi, lai hoi
ty nang » ky nang, ty xang, ty hang

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 nang mai hoi. hieu va ((cac tuc) or (cac toc)) va ((hanh ca) OR (hanh cac)) cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty nang mai hoi. hieu va ((cac tuc) OR (cac toc)) va ((hanh ca) OR (hanh cac)) cuu tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ty nang mai hoi. hieu va ((cac tuc) or (cac toc)) va ((hanh ca) OR (hanh cac)) cuu tre*".