Perhaps you should try some spelling variations:
su sach » vu sach
so sach » so sanh, bo sach, co sach
nang ma » tang ma, sang ma, nang cao
hieu ve » hieu va, hieu van
cam tuc » cam xuc, cam tu, nam thuc
xa dung » xa dong, va dung, a dung
doi cua » dai cua, hoi cua, dong cua
cua tre » cua te, cuu tre, cua triet
ma hoi » mai hoi, xa hoi, ma hoa
ve cam » ve cham, ve cac, va cam

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 (so sach)) ky nang ma hoi. hieu ve cam tuc ((xa dung) OR (xay dung)) doi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (so sach)) ky nang ma hoi. hieu ve cam tuc ((xa dung) OR (xay dung)) doi cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) or (so sach)) ky nang ma hoi. hieu ve cam tuc ((xa dung) OR (xay dung)) doi cua tre".
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (so sach)) ky nang ma hoi. hieu ve cam tuc ((xa dung) OR (xay dung)) doi cua tre*.