Perhaps you should try some spelling variations:
sach thu » sach thue, sach thieu, sach tham
hanh tri » thanh tri, hanh tai, hanh trinh
sach ty » sach y, sach tu, xach tay
lang xa » lang ha, dang xay, lang van
hieu va » lieu va, hieu qua
va cam » va cham, va cac, va cao
xuc va » duc va, tuc va, luc va
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: thuat ((sach ty) or (sach thu)) lang xa hoi. hieu va cam ((xuc va) or (tuc xa)) hanh tri cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat ((sach ty) OR (sach thu)) lang xa hoi. hieu va cam ((xuc va) OR (tuc xa)) hanh tri cua te.
• Adding a wildcard symbol may retrieve word variants: thuat ((sach ty) or (sach thu)) lang xa hoi. hieu va cam ((xuc va) or (tuc xa)) hanh tri cua te*.