Perhaps you should try some spelling variations:
chat trung » chat trong, ha trung, cua trung
thu sach » tu sach, thuat sach, thuoc sach
danh dai » danh dau, danh di, danh sai
hieu cao » chieu cao, hieu ca, kieu cao
trung va » truong va, trang va, trung ha
hieu cac » hieu luc, hieu va, hieu van
va danh » va dinh, va dan, va hanh
ly nang » ky nang, ly hang, ly vang
cua te » cua tu
y nang » ky nang, v nang, may nang

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach ((y nang) OR (ly nang)) xa hoi. ((hieu cao) or (hieu cac)) chat trung va danh dai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ((y nang) OR (ly nang)) xa hoi. ((hieu cao) OR (hieu cac)) chat trung va danh dai cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ((y nang) OR (ly nang)) xa hoi. ((hieu cao) or (hieu cac)) chat trung va danh dai cua te".
• Adding a wildcard symbol may retrieve word variants: thu sach ((y nang) OR (ly nang)) xa hoi. ((hieu cao) or (hieu cac)) chat trung va danh dai cua te*.