Perhaps you should try some spelling variations:
danh tai » doanh tai, dinh tai, hanh tai
tu sach » thu sach, su sach, te sach
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
thuc va » thuc vat, thuc dan, thuc day
cuc tre » cua tre, cuu tre, cuc thue
duc tre » duoc tren, duc tien
y nang » ky nang, ly nang, v nang
ve cam » ve cham, ve cac, va cam
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 xa hoi. hieu ve cam ((tuc va) OR (thuc va)) danh tai ((cuc tre) or (duc tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y nang xa hoi. hieu ve cam ((tuc va) OR (thuc va)) danh tai ((cuc tre) OR (duc tre)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach y nang xa hoi. hieu ve cam ((tuc va) OR (thuc va)) danh tai ((cuc tre) or (duc tre))".
• Adding a wildcard symbol may retrieve word variants: tu sach y nang xa hoi. hieu ve cam ((tuc va) OR (thuc va)) danh tai ((cuc tre) or (duc tre))*.