Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
cac truc » cau truc, cac tru, cac trung
truc van » truc va, thuc van, truc ban
van hanh » van thanh, ban hanh, van anh
ve triet » va trien, su triet
vu sach » vu bach, su sach, vu khach
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
hanh de » hanh ve, hanh kem
sach 2 » sach y
2 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: vu sach 2 nang xa hoi. hieu va cac truc van hanh de ((cua triet) or (ve triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach 2 nang xa hoi. hieu va cac truc van hanh de ((cua triet) OR (ve triet)).
• Adding a wildcard symbol may retrieve word variants: vu sach 2 nang xa hoi. hieu va cac truc van hanh de ((cua triet) or (ve triet))*.