Perhaps you should try some spelling variations:
thanh vi » hanh vi, thanh va, thanh ve
tu sang » thu sang, tu san, tu lang
sang ky » sang kyo, dang ky, tang ky
cua tre » cua te, cua triet, dua tren
cuu tre » cau tren, cau treo
hieu ve » hieu va, hieu van
nang xa » nang x, lang xa, nang ma
luc va » duc va, loc va
tuc va » thuc va, truc va, tuc xa
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 sang ky nang xa hoi. hieu ve cam ((luc va) OR (tuc va)) thanh vi ((cua tre) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sang ky nang xa hoi. hieu ve cam ((luc va) OR (tuc va)) thanh vi ((cua tre) OR (cuu tre)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sang ky nang xa hoi. hieu ve cam ((luc va) OR (tuc va)) thanh vi ((cua tre) or (cuu tre))".
• Adding a wildcard symbol may retrieve word variants: tu sang ky nang xa hoi. hieu ve cam ((luc va) OR (tuc va)) thanh vi ((cua tre) or (cuu tre))*.