Perhaps you should try some spelling variations:
thanh lap » phan lap, thanh hai, thanh van
tang van » dang van, hoang van, trong van
cham duc » pham duc, cham soc, pham duy
su sach » so sach, vu sach
hieu so » thieu so
sach ty » sach y, sach tu, sach thu
hieu vu » hieu va, hieu ve, hieu su
van hoi » van hoa, van hoc, van hoe
ty tang » tay tang, ty xang, ty hang
cuu tre » cua tre, cau tren, cau treo

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ty tang van hoi. ((hieu vu) or (hieu so)) cham duc va ((thanh lap) OR (thanh san)) cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty tang van hoi. ((hieu vu) OR (hieu so)) cham duc va ((thanh lap) OR (thanh san)) cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ty tang van hoi. ((hieu vu) or (hieu so)) cham duc va ((thanh lap) OR (thanh san)) cuu tre".
• Adding a wildcard symbol may retrieve word variants: su sach ty tang van hoi. ((hieu vu) or (hieu so)) cham duc va ((thanh lap) OR (thanh san)) cuu tre*.