Perhaps you should try some spelling variations:
danh tai » doanh tai, dinh tai, hanh tai
tu sach » thu sach, su sach, te sach
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
thuc va » thuc vat, thuc dan, thuc day
cuc tre » duc tre, cua tre, cuu tre
y nang » ly nang, v nang, may nang
tuc va » truc va, tuc xa, duc va

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) OR (ky nang)) xa hoi. hieu ve cham ((tuc va) or (thuc va)) danh tai cuc tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((y nang) OR (ky nang)) xa hoi. hieu ve cham ((tuc va) OR (thuc va)) danh tai cuc tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ((y nang) OR (ky nang)) xa hoi. hieu ve cham ((tuc va) or (thuc va)) danh tai cuc tre".
• Adding a wildcard symbol may retrieve word variants: tu sach ((y nang) OR (ky nang)) xa hoi. hieu ve cham ((tuc va) or (thuc va)) danh tai cuc tre*.