Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
van cham » van chat, van tham, va cham
cham luc » cham soc, nhan luc, cham cuu
trinh ly » trinh ky, trinh tu, sinh ly
trinh do » trinh ky
te sach » toc sach
nang ma » tang ma, sang ma, nang cao
luc van » luoc van, luu van, duc van
y nang » ky nang, ly nang, v nang

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 y nang ma hoa. hieu van cham luc van ((trinh ly) OR (trinh do)) cua vat~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach y nang ma hoa. hieu van cham luc van ((trinh ly) OR (trinh do)) cua vat".
• Adding a wildcard symbol may retrieve word variants: te sach y nang ma hoa. hieu van cham luc van ((trinh ly) OR (trinh do)) cua vat*.