Perhaps you should try some spelling variations:
thanh dai » thanh hai, thanh tai, thanh oai
thanh dat » thanh san, thanh hai, thanh van
nang mai » nang ma, nang tai, lang mai
mai khoi » mai khoa, tai khoa, cac khoi
cua tre » cuu tre, cua triet, dua tren
tu sach » thu sach, su sach, te sach
cam tuc » cam xuc, cam tu, nam thuc
y nang » ky nang, ly nang, v nang
tuc va » thuc va, truc va, tuc xa
va cam » va cham, va cac, va cao
cua te » cua tu

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 y nang mai khoi. lieu va cam tuc va ((thanh dai) or (thanh dat)) ((cua tre) OR (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y nang mai khoi. lieu va cam tuc va ((thanh dai) OR (thanh dat)) ((cua tre) OR (cua te)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach y nang mai khoi. lieu va cam tuc va ((thanh dai) or (thanh dat)) ((cua tre) OR (cua te))".
• Adding a wildcard symbol may retrieve word variants: tu sach y nang mai khoi. lieu va cam tuc va ((thanh dai) or (thanh dat)) ((cua tre) OR (cua te))*.