Perhaps you should try some spelling variations:
mach cam » mach cao, manh cam, mac ca
sach cam » sach cap, sach tham, sach dao
va hanh » van hanh, va thanh, va danh
doi cua » dai cua, hoi cua
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
va kinh » va tinh, qua kinh
ve cam » ve cham, ve cac, va cam
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: so ((sach cam) OR (mach cam)) nang xa hoi. hieu ve cam xuc ((va hanh) or (va kinh)) doi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so ((sach cam) OR (mach cam)) nang xa hoi. hieu ve cam xuc ((va hanh) OR (va kinh)) doi cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so ((sach cam) OR (mach cam)) nang xa hoi. hieu ve cam xuc ((va hanh) or (va kinh)) doi cua te".
• Adding a wildcard symbol may retrieve word variants: so ((sach cam) OR (mach cam)) nang xa hoi. hieu ve cam xuc ((va hanh) or (va kinh)) doi cua te*.