Perhaps you should try some spelling variations:
thien van » thi van
te sach » toc sach
va chua » vua chua, ca chua, va chu
hanh va » hang va, hanh vi
thuc va » thuc vat, thuc dan, thuc day
van cam » van nam, van lam, van cau
ly nang » ky nang, ly hang, ly vang
chua te » cua te, chua tu, chua xe
y nang » ky nang, v nang, may nang
luc va » duc va, tuc va, loc va

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 (ly nang)) xa hoi. thien van cam ((luc va) or (thuc va)) hanh va chua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((y nang) OR (ly nang)) xa hoi. thien van cam ((luc va) OR (thuc va)) hanh va chua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((y nang) OR (ly nang)) xa hoi. thien van cam ((luc va) or (thuc va)) hanh va chua te".
• Adding a wildcard symbol may retrieve word variants: te sach ((y nang) OR (ly nang)) xa hoi. thien van cam ((luc va) or (thuc va)) hanh va chua te*.