Perhaps you should try some spelling variations:
thanh vai » thanh hai, thanh van, thanh tai
thuc day » thuc dan, thuc vat
thu nang » thi nang, thu hang, thu bang
sach thu » sach thue, sach thieu, sach tham
te sach » toc sach
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
cua tre » cuu tre, cua triet, dua tren
cua te » cua tu
tuc va » thuc va, truc va, tuc xa
va co » vo co

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach thu nang xa hoi. hieu va co ((tuc va) or (thuc day)) thanh vai ((cua tre) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach thu nang xa hoi. hieu va co ((tuc va) OR (thuc day)) thanh vai ((cua tre) OR (cua te)).
• Adding a wildcard symbol may retrieve word variants: te sach thu nang xa hoi. hieu va co ((tuc va) or (thuc day)) thanh vai ((cua tre) or (cua te))*.