Perhaps you should try some spelling variations:
chat tuu » chat huu, chat cua, chat xuc
tu sach » thu sach, su sach, te sach
hieu va » lieu va, hieu qua
va chat » van chat, va phat, cao chat
tai cua » thai cua, tri cua, dai cua
y nang » ly nang, v nang, may nang
tuu va » tu va, cuu va, tru va
va han » va phan, van han, va hanh

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) OR (ky nang)) xa hoi. hieu va chat tuu va han ((tai cua) or (tai cuc)) te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((y nang) OR (ky nang)) xa hoi. hieu va chat tuu va han ((tai cua) OR (tai cuc)) te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ((y nang) OR (ky nang)) xa hoi. hieu va chat tuu va han ((tai cua) or (tai cuc)) te".
• Adding a wildcard symbol may retrieve word variants: tu sach ((y nang) OR (ky nang)) xa hoi. hieu va chat tuu va han ((tai cua) or (tai cuc)) te*.