Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
hanh tai » thanh tai, hang tai, han tai
ty nang » ky nang, ty xang, ly nang
tai cua » thai cua, tai cuc, tri cua
ty hang » ly hang, ty xang, thi hang
hieu va » lieu va, hieu qua
tuc va » thuc va, truc va, tuc xa
va cam » va cham, va cac, va cao
xuc va » duc va, luc va, xac va
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuat sach ((ty nang) OR (ty hang)) xa hoi. hieu va cam ((xuc va) or (tuc va)) hanh tai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sach ((ty nang) OR (ty hang)) xa hoi. hieu va cam ((xuc va) OR (tuc va)) hanh tai cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat sach ((ty nang) OR (ty hang)) xa hoi. hieu va cam ((xuc va) or (tuc va)) hanh tai cua te".
• Adding a wildcard symbol may retrieve word variants: thuat sach ((ty nang) OR (ty hang)) xa hoi. hieu va cam ((xuc va) or (tuc va)) hanh tai cua te*.