Perhaps you should try some spelling variations:
hanh vai » hanh vi, hanh va, hanh tai
su sach » so sach, vu sach
ky sang » ky nang, ky tang, duy sang
vai cua » dai cua, hai cua, lai cua
ky dang » ky nang, ky danh
lap lai » lap tai, lay lai, lam lai
hieu ve » hieu va, hieu van
tuc va » thuc va, truc va, tuc xa
ve cam » ve cham, ve cac, va cam
xuc va » duc va, luc va, xac va
cua tu » cua tuc, cua su, cua cu

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ((ky sang) or (ky dang)) lap lai. hieu ve cam ((xuc va) OR (tuc va)) hanh vai cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ((ky sang) OR (ky dang)) lap lai. hieu ve cam ((xuc va) OR (tuc va)) hanh vai cua tu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ((ky sang) or (ky dang)) lap lai. hieu ve cam ((xuc va) OR (tuc va)) hanh vai cua tu".
• Adding a wildcard symbol may retrieve word variants: su sach ((ky sang) or (ky dang)) lap lai. hieu ve cam ((xuc va) OR (tuc va)) hanh vai cua tu*.