Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
dau nuoc » dat nuoc, dau ngoc, cap nuoc
va thanh » gia thanh, ban thanh, va tinh
tu sach » thu sach, su sach, te sach
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
va dau » va dao
vi cua » vai cua
di cua » dai cua, doi cua, de cua

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 nang xa hoi. hieu va dau nuoc va thanh ((vi cua) OR (di cua)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thuat sach)) ky nang xa hoi. hieu va dau nuoc va thanh ((vi cua) OR (di cua)) triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (thuat sach)) ky nang xa hoi. hieu va dau nuoc va thanh ((vi cua) OR (di cua)) triet".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (thuat sach)) ky nang xa hoi. hieu va dau nuoc va thanh ((vi cua) OR (di cua)) triet*.