Perhaps you should try some spelling variations:
van luyen » van tuyen, va luyen, van quyen
luyen tre » luyen tri, huyen tren, tuyen tren
thu sach » tu sach, thuat sach, thuoc sach
nang cay » nang cao, nang cap, nang cai
cay phoi » cap phoi, tay hoi, cay cho
chat tuc » chat xuc, luat tuc, chat huu
xa thanh » ha thanh, ta thanh, gia thanh
va thanh » gia thanh, ban thanh, va tinh
hieu ve » hieu va, hieu van
ve chat » va chat, van chat
y nang » ky nang, ly nang, v 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 cay phoi. hieu ve chat tuc ((xa thanh) OR (va thanh)) van luyen tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach y nang cay phoi. hieu ve chat tuc ((xa thanh) OR (va thanh)) van luyen tre".
• Adding a wildcard symbol may retrieve word variants: thu sach y nang cay phoi. hieu ve chat tuc ((xa thanh) OR (va thanh)) van luyen tre*.