Perhaps you should try some spelling variations:
dat tren » dat trong, dua tren
thanh ve » hanh ve, thanh va, thanh vien
lang xa » lang ha, dang xay, lang van
hieu ve » hieu va, hieu van
luc va » duc va, tuc va, loc va
ve dat » de dat, va dat, ve dao
tu sac » tu sach, tu cac, tu san
xuc va » duc va, tuc va, xac va
sac ky » cac ky, sai ky
ve cam » ve cham, ve cac, va cam

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) or (nang x)) hoi. hieu ve cam ((xuc va) OR (luc va)) thanh ve dat tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky ((lang xa) OR (nang x)) hoi. hieu ve cam ((xuc va) OR (luc va)) thanh ve dat tren.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sac ky ((lang xa) or (nang x)) hoi. hieu ve cam ((xuc va) OR (luc va)) thanh ve dat tren".
• Adding a wildcard symbol may retrieve word variants: tu sac ky ((lang xa) or (nang x)) hoi. hieu ve cam ((xuc va) OR (luc va)) thanh ve dat tren*.