Perhaps you should try some spelling variations:
thanh lap » thanh san, phan lap, thanh hai
toc sach » hoc sach, doc sach, thuoc sach
lap chau » lai chau, a chau, ha chau
chau tre » chay tren, chau tho, cho tre
ty nang » ty xang, ty hang, ly nang
va cham » va tham
va chat » van chat, va phat, cao chat
xuc gia » duc gia, luc gia, tuc gia

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 (ky nang)) cau hoi. hieu ((va cham) or (va chat)) xuc gia thanh lap chau tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach ((ty nang) OR (ky nang)) cau hoi. hieu ((va cham) OR (va chat)) xuc gia thanh lap chau tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach ((ty nang) OR (ky nang)) cau hoi. hieu ((va cham) or (va chat)) xuc gia thanh lap chau tre".
• Adding a wildcard symbol may retrieve word variants: toc sach ((ty nang) OR (ky nang)) cau hoi. hieu ((va cham) or (va chat)) xuc gia thanh lap chau tre*.