Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
trinh han » trinh quan
nhan luc » nang luc
tinh hai » tinh thai, tinh chat, thanh hai
hinh bai » hinh tai, hinh thai, tinh bac
de nhan » do nhan, tue nhan, de thanh
hieu de » hieu ve, hieu he, hieu le
lang xa » lang ha, dang xay, lang van
luc va » duc va, tuc va, loc va
y lang » o lang, _ lang, tay lang
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: thuoc sach y lang xa hoi. hieu de nhan luc va ((hinh bai) or (((tinh hai) OR (trinh han)))) ca tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuoc sach y lang xa hoi. hieu de nhan luc va ((hinh bai) OR (((tinh hai) OR (trinh han)))) ca tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuoc sach y lang xa hoi. hieu de nhan luc va ((hinh bai) or (((tinh hai) OR (trinh han)))) ca tre".
• Adding a wildcard symbol may retrieve word variants: thuoc sach y lang xa hoi. hieu de nhan luc va ((hinh bai) or (((tinh hai) OR (trinh han)))) ca tre*.