Perhaps you should try some spelling variations:
cham doc » cham soc, chat doc, chau doc
thu nang » thi nang, thu hang, tho nang
hanh dai » hanh tai, hanh dao, vanh dai
thu bang » thu ban, thu hang, chu bang
te sach » toc sach
cua tre » cuu tre, cua triet, dua tren
va hanh » van hanh, va thanh, va danh
hieu va » lieu va, hieu qua
va cham » va chat, va tham
doc va » duoc va, hoc va, duc va
cua te » cua tu

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) or (thu bang)) xa hoi. hieu va cham doc va hanh dai ((cua tre) OR (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((thu nang) OR (thu bang)) xa hoi. hieu va cham doc va hanh dai ((cua tre) OR (cua te))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((thu nang) or (thu bang)) xa hoi. hieu va cham doc va hanh dai ((cua tre) OR (cua te))*".