Perhaps you should try some spelling variations:
thanh vai » thanh hai, thanh van, thanh tai
va thanh » gia thanh, ban thanh, va tinh
lang van » dang van, tang van, hoang van
su sach » so sach, vu sach
sach ty » sach y, sach tu, sach thu
vai cua » dai cua, hai cua, lai cua
phuc va » phuc vu, thuc va, chuc va
cua tre » cua te, cuu tre, cua triet
lang xa » lang ha, dang xay
va huu » vu huu
ve huu » le huu, vu huu, vien huu

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ty ((lang xa) or (lang van)) hoi. hieu ((ve huu) OR (va huu)) phuc va thanh vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty ((lang xa) OR (lang van)) hoi. hieu ((ve huu) OR (va huu)) phuc va thanh vai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ty ((lang xa) or (lang van)) hoi. hieu ((ve huu) OR (va huu)) phuc va thanh vai cua tre".
• Adding a wildcard symbol may retrieve word variants: su sach ty ((lang xa) or (lang van)) hoi. hieu ((ve huu) OR (va huu)) phuc va thanh vai cua tre*.