Perhaps you should try some spelling variations:
trinh quan » tinh quang, trinh luat, trinh han
hanh trinh » canh tranh, hanh chinh
sach thu » sach thue, sach tham, cach thuc
va cham » va chat, va tham
hieu va » lieu va, hieu qua
quan tu » quan su, tuan tu, xuan tu
cuu va » cuu van
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: te ((sach thu) OR (sach thieu)) nang x hoi. hieu va cham ((cuu va) or (cuu ve)) hanh trinh quan tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sach thu) OR (sach thieu)) nang x hoi. hieu va cham ((cuu va) OR (cuu ve)) hanh trinh quan tu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((sach thu) OR (sach thieu)) nang x hoi. hieu va cham ((cuu va) or (cuu ve)) hanh trinh quan tu".
• Adding a wildcard symbol may retrieve word variants: te ((sach thu) OR (sach thieu)) nang x hoi. hieu va cham ((cuu va) or (cuu ve)) hanh trinh quan tu*.