Perhaps you should try some spelling variations:
chat truc » cau truc, chat xuc
danh dai » danh dau, danh di, danh sai
hieu cac » hieu luc, hieu va, hieu van
cac chat » cao chat, cac thuat, cac nha
dua tren » dung tren
tu sach » thu sach, su sach, te sach
cuu tre » cau tren, cau treo
va danh » va dinh, va dan, va hanh
sach ky » sac ky, sach y, sach ty
truc va » thuc va, thuc vat, trung va
nang xa » nang x, lang xa, nang ma
cua tre » cua te, cua triet, cua thep

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