Perhaps you should try some spelling variations:
chat trung » chat trong, ha trung, cua trung
trung va » truong va, trang va, trung ha
dua tren » dung tren
danh dai » danh dau, danh di, danh sai
hieu cac » hieu luc, hieu va, hieu van
cac chat » cao chat, cac thuat, cac nha
va danh » va dinh, va dan, va hanh
tu sach » thu sach, te sach, tu cach
nang xa » nang x, lang xa, nang ma
su sach » so sach, vu sach
cuu tre » cua tre, cau tren, cau treo

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