Perhaps you should try some spelling variations:
tru nang » tra nang, tri nang, truc nano
te sach » toc sach
hanh di » hanh vi, hanh de, hang di
va cham » va chat, va tham
hieu va » lieu va, hieu qua
tu nano » truc nano
xuc va » duc va, tuc va, xac va
luc va » duc va, tuc va, loc va
di cua » dai cua, doi cua, de cua
cua tu » cua tuc, cua su, cua cu

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 ((tu nano) or (tru nang)) xa hoi. hieu va cham ((xuc va) or (luc va)) hanh di cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((tu nano) OR (tru nang)) xa hoi. hieu va cham ((xuc va) OR (luc va)) hanh di cua tu.
• Adding a wildcard symbol may retrieve word variants: te sach ((tu nano) or (tru nang)) xa hoi. hieu va cham ((xuc va) or (luc va)) hanh di cua tu*.