Perhaps you should try some spelling variations:
nang cau » nang cao, hang cau, nang dau
hieu van » hieu va, thien van, lieu va
van cam » van nam, van lam, van cau
luu tre » luu tru, cuu tre, luy tre
te sac » te sach, te cac, te san
sac ky » cac ky, sai ky
xuc va » duc va, luc va, xac va
tuc va » thuc va, truc va, tuc xa
vi luu » vi lua

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: te sac ky nang cau hoi. hieu van cam ((xuc va) OR (tuc va)) hanh vi luu tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sac ky nang cau hoi. hieu van cam ((xuc va) OR (tuc va)) hanh vi luu tre".
• Adding a wildcard symbol may retrieve word variants: te sac ky nang cau hoi. hieu van cam ((xuc va) OR (tuc va)) hanh vi luu tre*.