Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
hieu van » hieu va, thien van, lieu va
lai cua » dai cua, hai cua, lai chau
vai cua » dai cua, hai cua, bai cua
sach ly » sach y, sach lo, sach ty
van cam » van nam, van lam, van cau
ly nang » ky nang, ly hang, ly vang
tuc va » thuc va, truc va, tuc xa
xuc va » duc va, luc va, xac va
x hoi » xa hoi, o hoi, x ho

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 ly nang x hoi. hieu van cam ((xuc va) or (tuc va)) hanh ((vai cua) OR (lai cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sach ly nang x hoi. hieu van cam ((xuc va) OR (tuc va)) hanh ((vai cua) OR (lai cua)) tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat sach ly nang x hoi. hieu van cam ((xuc va) or (tuc va)) hanh ((vai cua) OR (lai cua)) tre*".