Perhaps you should try some spelling variations:
cham duc » pham duc, cham soc, pham duy
van hanh » van thanh, ban hanh, van anh
mat cua » ma cua, manh cua, mang cua
cau cua » cau qua, ca cua, cu cua
duc van » duc va, duc tan, duc manh
su sach » so sach
hieu va » lieu va, hieu qua
nang ma » tang ma, sang ma, nang cao
vu sach » vu bach, vu khach
va cham » va chat, va tham
ma hoi » mai hoi, xa hoi, ma hoa
y nang » ky nang, ly nang, v nang

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) OR (vu sach)) y nang ma hoi. hieu va cham duc van hanh ((cau cua) or (mat cua)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (vu sach)) y nang ma hoi. hieu va cham duc van hanh ((cau cua) OR (mat cua)) triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) OR (vu sach)) y nang ma hoi. hieu va cham duc van hanh ((cau cua) or (mat cua)) triet".
• Adding a wildcard symbol may retrieve word variants: ((su sach) OR (vu sach)) y nang ma hoi. hieu va cham duc van hanh ((cau cua) or (mat cua)) triet*.