Perhaps you should try some spelling variations:
hoc sach » hoc sinh, hoc cac, hoc anh
cham duc » pham duc, cham soc, pham duy
cau tren » cu tren, dau tren, ca tren
tu sach » thu sach, su sach, tu cach
te sach » toc sach
nang xa » nang x, lang xa, nang ma
va cham » va chat, va tham
han tai » hang tai, nhan tai, van tai
tai cau » tai cac, tai cao
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) or (te sach))) or (hoc sach)) ky nang xa hoi. lieu va cham duc va han tai cau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((tu sach) OR (te sach))) OR (hoc sach)) ky nang xa hoi. lieu va cham duc va han tai cau tren.
• Adding a wildcard symbol may retrieve word variants: ((((tu sach) or (te sach))) or (hoc sach)) ky nang xa hoi. lieu va cham duc va han tai cau tren*.