Perhaps you should try some spelling variations:
nuoc sach » nguoi sach, hoc sach, cuoc cach
trinh han » trinh quan
nhan luc » nang luc
tinh hai » tinh thai, tinh chat, thanh hai
tinh bai » tinh bac, hinh bai, tinh bao
va nhan » van nhan, ca nhan, va phan
nang xa » nang x, lang xa, nang ma
luc va » duc va, tuc va, loc va
y nang » ky nang, ly nang, v nang
ca tre » ca tren, cua tre, ca tru

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: nuoc sach y nang xa hoi. lieu va nhan luc va ((tinh bai) or (((tinh hai) OR (trinh han)))) ca tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: nuoc sach y nang xa hoi. lieu va nhan luc va ((tinh bai) OR (((tinh hai) OR (trinh han)))) ca tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "nuoc sach y nang xa hoi. lieu va nhan luc va ((tinh bai) or (((tinh hai) OR (trinh han)))) ca tre".
• Adding a wildcard symbol may retrieve word variants: nuoc sach y nang xa hoi. lieu va nhan luc va ((tinh bai) or (((tinh hai) OR (trinh han)))) ca tre*.