Perhaps you should try some spelling variations:
chat truc » cau truc, chat xuc
sach thu » sach thue, sach thieu, sach tham
hieu van » hieu va, thien van, lieu va
van chat » cao chat
nang xa » nang x, lang xa, nang ma
truc va » thuc va, thuc vat, trung va
va hanh » van hanh, va thanh, va danh
hai cua » thai cua, hoi cua, lai cua
sac ky » cac ky, sai ky

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