Perhaps you should try some spelling variations:
va thanh » gia thanh, ban thanh, va tinh
thanh di » thanh doi, thanh de, thanh do
te sach » toc sach
hieu ve » hieu van
hieu va » lieu va, hieu qua
cau luc » cau truc, cau phuc
y nang » ly nang, v nang, may nang
luc va » duc va, tuc va, loc va
di cua » dai cua, doi cua, de cua
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 ((y nang) OR (ky nang)) xa hoi. ((hieu ve) or (hieu va)) cau luc va thanh di cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((y nang) OR (ky nang)) xa hoi. ((hieu ve) OR (hieu va)) cau luc va thanh di cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((y nang) OR (ky nang)) xa hoi. ((hieu ve) or (hieu va)) cau luc va thanh di cua te".
• Adding a wildcard symbol may retrieve word variants: te sach ((y nang) OR (ky nang)) xa hoi. ((hieu ve) or (hieu va)) cau luc va thanh di cua te*.