Perhaps you should try some spelling variations:
sach thu » sach thue, sach thieu, sach tham
thu nang » thi nang, thu hang, thu bang
te sach » toc sach
hanh le » thanh le, hanh ve, hanh de
nang xa » nang x, lang xa, nang ma
hieu va » hieu qua
xuc va » duc va, luc va, xac va
tuc va » thuc va, truc va, tuc xa
le cua » ly cua
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: te sach thu nang xa hoi. ((hieu va) OR (lieu va)) tham ((xuc va) or (tuc va)) hanh le cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach thu nang xa hoi. ((hieu va) OR (lieu va)) tham ((xuc va) OR (tuc va)) hanh le cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach thu nang xa hoi. ((hieu va) OR (lieu va)) tham ((xuc va) or (tuc va)) hanh le cua te".
• Adding a wildcard symbol may retrieve word variants: te sach thu nang xa hoi. ((hieu va) OR (lieu va)) tham ((xuc va) or (tuc va)) hanh le cua te*.