Perhaps you should try some spelling variations:
nam thuc » nam thuoc, am thuc, nam thu
hanh vai » hanh vi, hanh va, hanh tai
cam tuc » cam xuc, cam tu, dam thuc
vai cuu » vai cua
va hanh » van hanh, va thanh, va danh
cuu tre » cua tre, cau tren, cau treo
sach ty » sach y, sach thu, xach tay
hieu ve » hieu va, hieu van
hang xa » hoang xa, hang va, hang ca
sach tu » sach thu, cach tu, sach uu

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 ty) or (sach tu)) hang xa hoi. hieu ve ((cam tuc) OR (nam thuc)) va hanh vai cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sach ty) OR (sach tu)) hang xa hoi. hieu ve ((cam tuc) OR (nam thuc)) va hanh vai cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((sach ty) or (sach tu)) hang xa hoi. hieu ve ((cam tuc) OR (nam thuc)) va hanh vai cuu tre".
• Adding a wildcard symbol may retrieve word variants: te ((sach ty) or (sach tu)) hang xa hoi. hieu ve ((cam tuc) OR (nam thuc)) va hanh vai cuu tre*.