Perhaps you should try some spelling variations:
tu sang » thu sang, tu san, tu lang
sang ky » sang kyo, dang ky, tang ky
hang di » hang doi, hang vi, hang dien
hanh di » hanh vi, hanh de, danh di
vuc van » duc van, luc van, thuc van
ca viet » va viet, co viet, hoa viet
xuc van » duc van, luc van, xuc ban
qua cua » quan cua, quang cua, qua quan
lang xa » lang ha, dang xay, lang van
ky lang » ky nang, ky dang, ky tang

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 lang xa hoi. hieu qua cua ((xuc van) or (vuc van)) ((hanh di) or (hang di)) ca viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sang ky lang xa hoi. hieu qua cua ((xuc van) OR (vuc van)) ((hanh di) OR (hang di)) ca viet.
• Adding a wildcard symbol may retrieve word variants: tu sang ky lang xa hoi. hieu qua cua ((xuc van) or (vuc van)) ((hanh di) or (hang di)) ca viet*.