Perhaps you should try some spelling variations:
tham loc » tham nuoc, cham soc, hau loc
dua tren » dung tren
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
hieu va » lieu va, hieu qua
va tham » van tham, va cham, va thanh
va hanh » van hanh, va thanh, va danh
cua tre » cuu tre, cua triet, cua thep
te cac » tu cac, ve cac, te cao
loc va » hoc va, luc va
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: te cac ky lang xa hoi. hieu va tham loc va hanh vi ((((cua tre) OR (dua tren))) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te cac ky lang xa hoi. hieu va tham loc va hanh vi ((((cua tre) OR (dua tren))) OR (cua te)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te cac ky lang xa hoi. hieu va tham loc va hanh vi ((((cua tre) OR (dua tren))) or (cua te))".
• Adding a wildcard symbol may retrieve word variants: te cac ky lang xa hoi. hieu va tham loc va hanh vi ((((cua tre) OR (dua tren))) or (cua te))*.