Perhaps you should try some spelling variations:
thanh van » thanh san, thanh toan, thanh phan
cau tren » cu tren, dau tren, ca tren
ha thanh » va thanh, pham thanh, phan thanh
sach ty » sach y, sach tu, sach thu
van cau » van dau, van hau, van chat
va cham » va chat, va tham
tu sach » thu sach, su sach, te sach
nang xa » nang x, lang xa, nang ma
ty nang » ky nang, ty xang, ty hang
ve cham » ve chat, vu cham, ve chim
ve cam » ve cac, va cam, ve cai
tuc ha » tuc hai, thuc ha, tuc hat

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 ty nang xa hoi. hieu ((ve cam) or (((ve cham) or (va cham)))) tuc ha thanh van cau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty nang xa hoi. hieu ((ve cam) OR (((ve cham) OR (va cham)))) tuc ha thanh van cau tren.
• Adding a wildcard symbol may retrieve word variants: tu sach ty nang xa hoi. hieu ((ve cam) or (((ve cham) or (va cham)))) tuc ha thanh van cau tren*.