Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
van cam » van nam, van lam, van cau
sach ty » sach y, sach tu, sach thu
nang xa » nang x, lang xa, nang ma
vi cua » vai cua, di cua
tuc va » thuc va, truc va, tuc xa
xac va » tac va, ac va, bac va
sac ky » cac ky, sai ky
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: tu ((sac ky) or (sach ty)) nang xa hoi. hieu van cam ((xac va) or (tuc va)) hanh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sac ky) OR (sach ty)) nang xa hoi. hieu van cam ((xac va) OR (tuc va)) hanh vi cua te.
• Adding a wildcard symbol may retrieve word variants: tu ((sac ky) or (sach ty)) nang xa hoi. hieu van cam ((xac va) or (tuc va)) hanh vi cua te*.