Perhaps you should try some spelling variations:
thanh dai » thanh hai, thanh tai, thanh dat
toc sach » hoc sach, doc sach, thuoc sach
cau tren » dau tren, ca tren, cau treo
truc gia » truc giac, tuc gia, thuc giai
cu tren » tu tren, dua tren
sach ky » sac ky, sach y, sach ty
va tham » van tham, va cham, va thanh
nang xa » nang x, lang xa, nang ma
va cao » va cac, va co, va dao

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 ky nang xa hoi. hieu ((va tham) or (va cao)) truc gia thanh dai ((cau tren) OR (cu tren))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach ky nang xa hoi. hieu ((va tham) OR (va cao)) truc gia thanh dai ((cau tren) OR (cu tren))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach ky nang xa hoi. hieu ((va tham) or (va cao)) truc gia thanh dai ((cau tren) OR (cu tren))*".