Perhaps you should try some spelling variations:
dua tren » dung tren
hieu van » hieu va, thien van, lieu va
va thanh » gia thanh, ban thanh, va tinh
sach ky » sac ky, sach y, sach ty
cu tren » tu tren
tu sach » thu sach, su sach, te sach
va hanh » van hanh, va danh, ban hanh
lam xuc » cam xuc, lam duoc
van lam » van nam
nang xa » nang x, lang xa, nang ma

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ky nang xa hoi. hieu van lam xuc ((va hanh) or (va thanh)) vi ((cu tren) OR (dua tren))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang xa hoi. hieu van lam xuc ((va hanh) OR (va thanh)) vi ((cu tren) OR (dua tren)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky nang xa hoi. hieu van lam xuc ((va hanh) or (va thanh)) vi ((cu tren) OR (dua tren))".
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang xa hoi. hieu van lam xuc ((va hanh) or (va thanh)) vi ((cu tren) OR (dua tren))*.