Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
tu sach » thu sach, su sach, te sach
dinh di » dinh du, dinh vi, danh di
ve cham » va cham, ve chat, vu cham
hieu ve » hieu va, hieu van
dang xa » dang xay, lang xa, dang ha
ky dang » ky nang, ky danh
xuc va » tuc va, luc va, xac va
di cua » dai cua, doi cua, de cua
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: ((tu sach) or (thuat sach)) ky dang xa hoi. hieu ve cham ((xuc va) OR (duc va)) dinh di cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thuat sach)) ky dang xa hoi. hieu ve cham ((xuc va) OR (duc va)) dinh di cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (thuat sach)) ky dang xa hoi. hieu ve cham ((xuc va) OR (duc va)) dinh di cua te".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (thuat sach)) ky dang xa hoi. hieu ve cham ((xuc va) OR (duc va)) dinh di cua te*.