Perhaps you should try some spelling variations:
te sach » toc sach
lua tre » cua tre, luy tre, dua tren
y nang » ky nang, ly nang, v nang
ve cac » vien cac
xuc va » duc va, tuc va, luc va
va dan » ca dan, va dao, va dau
dan vi » doan vi, don vi, dan va
vi lua » vi luu
x hoi » xa hoi, o hoi, 5 hoi

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 ((x hoi) OR (x ho)). hieu ((ve cac) or (va cac)) xuc va dan vi lua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y nang ((x hoi) OR (x ho)). hieu ((ve cac) OR (va cac)) xuc va dan vi lua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach y nang ((x hoi) OR (x ho)). hieu ((ve cac) or (va cac)) xuc va dan vi lua tre".
• Adding a wildcard symbol may retrieve word variants: te sach y nang ((x hoi) OR (x ho)). hieu ((ve cac) or (va cac)) xuc va dan vi lua tre*.