Perhaps you should try some spelling variations:
chau tre » chay tren, chau tho, cau tra
hanh lai » hanh lam, hanh tai, thanh lap
van chat » cao chat
tu sach » thu sach, su sach, te sach
ve chat » va chat
va hanh » van hanh, va thanh, va danh
cho tre » cho thue, khoe tre
sach ty » sach y, sach tu, sach thu
nang ma » tang ma, sang ma, nang cao
ty nang » ky nang, ty xang, ty hang
ma hoi » mai hoi, xa hoi, ma hoa

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ty nang ma hoi. hieu ((van chat) or (ve chat)) duc va hanh lai ((chau tre) OR (cho tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty nang ma hoi. hieu ((van chat) OR (ve chat)) duc va hanh lai ((chau tre) OR (cho tre)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ty nang ma hoi. hieu ((van chat) or (ve chat)) duc va hanh lai ((chau tre) OR (cho tre))".
• Adding a wildcard symbol may retrieve word variants: tu sach ty nang ma hoi. hieu ((van chat) or (ve chat)) duc va hanh lai ((chau tre) OR (cho tre))*.