Perhaps you should try some spelling variations:
thien van » thi van
dinh lai » dinh lam, dinh lap, dinh tai
chau tu » chau au, cau tu, chu tu
hieu va » lieu va, hieu qua
lang xa » lang ha, dang xay, lang van
ky lang » ky nang, ky dang, ky tang
sac ky » cac ky, sai ky
xuc va » duc va, tuc va, xac va
luc va » duc va, tuc va, loc va
tu sac » tu sach, tu cac, tu san

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 lang xa hoi. ((hieu va) or (thien van)) chat ((xuc va) OR (luc va)) dinh lai chau tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky lang xa hoi. ((hieu va) OR (thien van)) chat ((xuc va) OR (luc va)) dinh lai chau tu*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sac ky lang xa hoi. ((hieu va) or (thien van)) chat ((xuc va) OR (luc va)) dinh lai chau tu*".