Perhaps you should try some spelling variations:
thanh lap » thanh san, phan lap, thanh hai
toc sach » hoc sach, doc sach, thuoc sach
va thanh » gia thanh, ban thanh, va tinh
van quan » van ban
cau tren » cu tren, dau tren, ca tren
cao hoi » cau hoi, co hoi, cao hoc
van tai » von tai, van tuan
ty hang » ly hang, ty xang, thi hang
ty nang » ky nang, ty xang, ly nang
lap cau » luat cau, phap cau
tuc va » thuc va, truc va, tuc xa

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc sach ((ty nang) OR (ty hang)) cao hoi. hieu ((van tai) or (van quan)) tuc va thanh lap cau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach ((ty nang) OR (ty hang)) cao hoi. hieu ((van tai) OR (van quan)) tuc va thanh lap cau tren.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach ((ty nang) OR (ty hang)) cao hoi. hieu ((van tai) or (van quan)) tuc va thanh lap cau tren".
• Adding a wildcard symbol may retrieve word variants: toc sach ((ty nang) OR (ty hang)) cao hoi. hieu ((van tai) or (van quan)) tuc va thanh lap cau tren*.