Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
hieu van » hieu va, thien van, lieu va
lam duoc » nam duoc, luat duoc, lam thuoc
ve triet » va trien, su triet
lam duc » pham duc, nam duoc, lam dung
sach ky » sac ky, sach y, sach ty
nang ro » nang co, nang ho, nang ra
hanh de » hanh ve, hanh kem
hang di » hang doi, hang vi, hang dien
ro hoi » co hoi, o hoi, mo hoi

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 ky nang ro hoi. hieu van ((lam duc) OR (lam duoc)) va ((hanh de) or (hang di)) ve triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sach ky nang ro hoi. hieu van ((lam duc) OR (lam duoc)) va ((hanh de) OR (hang di)) ve triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat sach ky nang ro hoi. hieu van ((lam duc) OR (lam duoc)) va ((hanh de) or (hang di)) ve triet".
• Adding a wildcard symbol may retrieve word variants: thuat sach ky nang ro hoi. hieu van ((lam duc) OR (lam duoc)) va ((hanh de) or (hang di)) ve triet*.