Perhaps you should try some spelling variations:
van tham » van thanh, van chat, van tai
hanh lai » hanh lam, hanh tai, thanh lap
van tuan » van quan, van ban, anh tuan
lai cuu » lai cua, lai chau, lai cuoc
va hanh » van hanh, va thanh, va danh
sach ty » sach y, sach thu, xach tay
cao hoi » cau hoi, co hoi, cao hoc
sach tu » sach thu, cach tu, sach uu
cuu tre » cua 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: te ((sach ty) OR (sach tu)) nang cao hoi. hieu ((van tham) or (van tuan)) duc va hanh lai cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sach ty) OR (sach tu)) nang cao hoi. hieu ((van tham) OR (van tuan)) duc va hanh lai cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((sach ty) OR (sach tu)) nang cao hoi. hieu ((van tham) or (van tuan)) duc va hanh lai cuu tre".
• Adding a wildcard symbol may retrieve word variants: te ((sach ty) OR (sach tu)) nang cao hoi. hieu ((van tham) or (van tuan)) duc va hanh lai cuu tre*.