Perhaps you should try some spelling variations:
thanh vi » hanh vi, thanh va, thanh ve
duc manh » suc manh, duc anh, duc minh
vu sach » vu bach, su sach, vu khach
cua tre » cua te, cua triet, dua tren
duc van » duc va, duc tan, duc phan
sach ty » sach y, sach tu, sach thu
va cham » va chat, va tham
hieu va » lieu va, hieu qua
hang xa » hoang xa, hang va, hang ca
ty hang » ly hang, ty xang, thi hang
cuu tre » cau tren, cau treo

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach ty hang xa hoi. hieu va cham ((duc van) or (duc manh)) thanh vi ((cua tre) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ty hang xa hoi. hieu va cham ((duc van) OR (duc manh)) thanh vi ((cua tre) OR (cuu tre)).
• Adding a wildcard symbol may retrieve word variants: vu sach ty hang xa hoi. hieu va cham ((duc van) or (duc manh)) thanh vi ((cua tre) or (cuu tre))*.