Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, hieu ve
van hanh » van thanh, ban hanh, van anh
tu sach » thu sach, su sach, te sach
sach ly » sach y, sach lo, sach ty
ly nang » ky nang, ly hang, ly vang
lam xuc » cam xuc, lam duoc
xuc van » duc van, luc van, vuc van
doi cua » dai cua, hoi cua
di cua » dai cua, de cua, do cua
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: tu sach ly nang x hoi. ((hieu van) OR (lieu va)) lam xuc van hanh ((di cua) or (doi cua)) vat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ly nang x hoi. ((hieu van) OR (lieu va)) lam xuc van hanh ((di cua) OR (doi cua)) vat.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ly nang x hoi. ((hieu van) OR (lieu va)) lam xuc van hanh ((di cua) or (doi cua)) vat".
• Adding a wildcard symbol may retrieve word variants: tu sach ly nang x hoi. ((hieu van) OR (lieu va)) lam xuc van hanh ((di cua) or (doi cua)) vat*.