Perhaps you should try some spelling variations:
va thanh » gia thanh, ban thanh, le thanh
chat duc » chat xuc, chat doc, chet duoc
cua tre » cua te, cuu tre, cua triet
va tinh » may tinh
sach ly » sach y, sach lo, sach ty
te sach » toc sach
ve chat » va chat, van chat
hieu ve » hieu va, hieu van
ly nang » ky nang, ly hang, ly vang
cu tren » tu tren, dua tren
nang o » nang co, nang ho, nang ro
o hoi » co hoi, o hoc, o hai

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 ly nang o hoi. hieu ve chat duc ((va thanh) OR (va tinh)) vi ((cua tre) or (cu tren))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ly nang o hoi. hieu ve chat duc ((va thanh) OR (va tinh)) vi ((cua tre) OR (cu tren)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ly nang o hoi. hieu ve chat duc ((va thanh) OR (va tinh)) vi ((cua tre) or (cu tren))".
• Adding a wildcard symbol may retrieve word variants: te sach ly nang o hoi. hieu ve chat duc ((va thanh) OR (va tinh)) vi ((cua tre) or (cu tren))*.