Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
hieu van » hieu va, thien van, lieu va
thanh de » hanh de, thanh ve, thanh do
tu sach » thu sach, su sach, te sach
nang xa » nang x, lang xa, nang ma
van cam » van nam, van lam, van cau
xuc van » luc van, vuc van, xuc ban
duc van » duc va, duc tan, duc manh
de cua » le cua, te cua, dieu 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: ((thuat sach) or (tu sach)) ky nang xa hoi. hieu van cam ((xuc van) OR (duc van)) thanh de cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thuat sach) OR (tu sach)) ky nang xa hoi. hieu van cam ((xuc van) OR (duc van)) thanh de cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thuat sach) or (tu sach)) ky nang xa hoi. hieu van cam ((xuc van) OR (duc van)) thanh de cua te".
• Adding a wildcard symbol may retrieve word variants: ((thuat sach) or (tu sach)) ky nang xa hoi. hieu van cam ((xuc van) OR (duc van)) thanh de cua te*.