Perhaps you should try some spelling variations:
tu sach » thu sach, te sach, tu cach
va dinh » van dinh, va kinh, va tinh
hai cua » thai cua, dai cua, hoi cua
su sach » so sach, vu sach
sai cua » dai cua, lai cua, bai cua
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
cam loc » cam lo
ve cam » ve cham, ve cac, va cam
loc va » hoc va, luc va
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: ((tu sach) OR (su sach)) y nang xa hoi. hieu ve cam loc va dinh ((sai cua) or (hai cua)) te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (su sach)) y nang xa hoi. hieu ve cam loc va dinh ((sai cua) OR (hai cua)) te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) OR (su sach)) y nang xa hoi. hieu ve cam loc va dinh ((sai cua) or (hai cua)) te".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) OR (su sach)) y nang xa hoi. hieu ve cam loc va dinh ((sai cua) or (hai cua)) te*.