Perhaps you should try some spelling variations:
hanh vai » hanh vi, hanh va, hanh tai
vai cuu » vai cua
hieu va » lieu va, hieu qua
cuu tre » cua tre, cau tren, cau treo
nang xa » nang x, lang xa, nang ma
xac ky » cac ky, bac ky
lo van » le van, vo van, so van
sac ky » cac ky, sai ky
lo va » lao va, ly va, le va

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu ((xac ky) or (sac ky)) nang xa hoi. hieu va cac ((lo va) OR (lo van)) hanh vai cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu ((xac ky) OR (sac ky)) nang xa hoi. hieu va cac ((lo va) OR (lo van)) hanh vai cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu ((xac ky) or (sac ky)) nang xa hoi. hieu va cac ((lo va) OR (lo van)) hanh vai cuu tre".
• Adding a wildcard symbol may retrieve word variants: thu ((xac ky) or (sac ky)) nang xa hoi. hieu va cac ((lo va) OR (lo van)) hanh vai cuu tre*.