Perhaps you should try some spelling variations:
thu sang » thu hang, thu bang, thu dang
va thanh » gia thanh, ban thanh, va tinh
vai cua » dai cua, hai cua, lai cua
va hanh » van hanh, va danh, ban hanh
hieu va » lieu va, hieu qua
cua tre » cua te, cuu tre, cua triet
thu san » thuy san, thu ban, phu san
nang o » nang co, nang ho, nang ro
cac co » cac cong
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: ((thu sang) OR (thu san)) ky nang o hoi. hieu va cac co ((va hanh) or (va thanh)) vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu sang) OR (thu san)) ky nang o hoi. hieu va cac co ((va hanh) OR (va thanh)) vai cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thu sang) OR (thu san)) ky nang o hoi. hieu va cac co ((va hanh) or (va thanh)) vai cua tre*".