Perhaps you should try some spelling variations:
cau tren » cu tren, dau tren, ca tren
thu nang » thu hang, thu bang, tho nang
su triet » su viet, su tien, ve triet
thi nang » thi cong, ki nang, thi hanh
xa dung » xay dung, xa dong, va dung
cham tu » pham tu, cam tu, chai tu
su sach » so sach, vu sach
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
tu xa » tu xay, tu va, te xa

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 ((thu nang) OR (thi nang)) xa hoi. hieu ve cham tu xa dung tai ((su triet) or (cau tren))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ((thu nang) OR (thi nang)) xa hoi. hieu ve cham tu xa dung tai ((su triet) OR (cau tren)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ((thu nang) OR (thi nang)) xa hoi. hieu ve cham tu xa dung tai ((su triet) or (cau tren))".
• Adding a wildcard symbol may retrieve word variants: su sach ((thu nang) OR (thi nang)) xa hoi. hieu ve cham tu xa dung tai ((su triet) or (cau tren))*.